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<title>[49394] branches/5.2: General: WordPress updates</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/49394">49394</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/49394","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>whyisjake</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2020-10-29 18:44:12 +0000 (Thu, 29 Oct 2020)</dd>
</dl>

<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>General: WordPress updates

* XML-RPC: Improve error messages for unprivileged users.
* External Libraries: Disable deserialization in Requests_Utility_FilteredIterator
* Embeds: Disable embeds on deactivated Multisite sites.
* Coding standards: Modify escaping functions to avoid potential false positives.
* XML-RPC: Return error message if attachment ID is incorrect.
* Upgrade/install: Improve logic check when determining installation status.
* Meta: Sanitize meta key before checking protection status.
* Themes: Ensure that only privileged users can set a background image when a theme is using the deprecated custom background page.

Brings the changes from [49380,49382-49388] to the 5.2 branch.

Props xknown, zieladam, peterwilsoncc, whyisjake, desrosj, dd32.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#branches52srcjs_enqueuesadmincustombackgroundjs">branches/5.2/src/js/_enqueues/admin/custom-background.js</a></li>
<li><a href="#branches52srcjs_enqueuesdeprecatedmediagalleryjs">branches/5.2/src/js/_enqueues/deprecated/media-gallery.js</a></li>
<li><a href="#branches52srcwpadminadminheaderphp">branches/5.2/src/wp-admin/admin-header.php</a></li>
<li><a href="#branches52srcwpadmincustombackgroundphp">branches/5.2/src/wp-admin/custom-background.php</a></li>
<li><a href="#branches52srcwpadmincustomheaderphp">branches/5.2/src/wp-admin/custom-header.php</a></li>
<li><a href="#branches52srcwpadminincludesmediaphp">branches/5.2/src/wp-admin/includes/media.php</a></li>
<li><a href="#branches52srcwpadminincludesmsphp">branches/5.2/src/wp-admin/includes/ms.php</a></li>
<li><a href="#branches52srcwpadminincludestemplatephp">branches/5.2/src/wp-admin/includes/template.php</a></li>
<li><a href="#branches52srcwpadminmedianewphp">branches/5.2/src/wp-admin/media-new.php</a></li>
<li><a href="#branches52srcwpadminnetworksiteusersphp">branches/5.2/src/wp-admin/network/site-users.php</a></li>
<li><a href="#branches52srcwpincludesRequestsUtilityFilteredIteratorphp">branches/5.2/src/wp-includes/Requests/Utility/FilteredIterator.php</a></li>
<li><a href="#branches52srcwpincludesclasswpxmlrpcserverphp">branches/5.2/src/wp-includes/class-wp-xmlrpc-server.php</a></li>
<li><a href="#branches52srcwpincludesembedphp">branches/5.2/src/wp-includes/embed.php</a></li>
<li><a href="#branches52srcwpincludesfunctionsphp">branches/5.2/src/wp-includes/functions.php</a></li>
<li><a href="#branches52srcwpincludesmetaphp">branches/5.2/src/wp-includes/meta.php</a></li>
<li><a href="#branches52testsphpunittestsfunctionsphp">branches/5.2/tests/phpunit/tests/functions.php</a></li>
<li><a href="#branches52testsphpunittestsmultisitesitephp">branches/5.2/tests/phpunit/tests/multisite/site.php</a></li>
</ul>

<h3>Added Paths</h3>
<ul>
<li><a href="#branches52testsphpunittestsmetaisProtectedMetaphp">branches/5.2/tests/phpunit/tests/meta/isProtectedMeta.php</a></li>
</ul>

<h3>Property Changed</h3>
<ul>
<li><a href="#branches52">branches/5.2/</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<span class="cx" style="display: block; padding: 0 10px">Index: branches/5.2
</span><span class="cx" style="display: block; padding: 0 10px">===================================================================
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">--- branches/5.2 2020-10-29 18:41:43 UTC (rev 49393)
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+++ branches/5.2  2020-10-29 18:44:12 UTC (rev 49394)
</ins><a id="branches52"></a>
<div class="propset"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Property changes: branches/5.2</h4>
<pre class="diff"><span>
</span></pre></div>
<a id="svnmergeinfo"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: svn:mergeinfo</h4></div>
<span class="cx" style="display: block; padding: 0 10px"> /branches/3.4:21757
</span><span class="cx" style="display: block; padding: 0 10px"> /branches/4.9:43557,43622
</span><span class="cx" style="display: block; padding: 0 10px"> /branches/5.0:43681-43682,43684-43688,43719-43720,43723,43726-43727,43729-43731,43734-43744,43747,43751-43754,43758,43760-43765,43767-43770,43772,43774-43781,43783,43785,43790-43806,43808-43821,43825,43828,43830-43834,43836-43843,43846-43863,43867-43889,43891-43894,43897-43905,43908-43909,43911-43929,43931-43942,43946-43947,43949-43956,43959-43964,43967-43969,43988,43994,44014,44017,44047,44183,44185,44187-44206,44208-44213,44231-44232,44235,44248,44284,44287-44288
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-/trunk:45284-45285,45287,45289,45292,45296,45298,45300-45301,45308-45311,45316,45319,45322,45324,45326,45328,45331,45334,45336,45338,45340,45342,45344-45346,45348,45350,45352,45357,45365,45367,45376,45403,45411,45416,45425,45463,45481,45488,45495,45501-45503,45506-45507,45515,45520,45522,45526-45527,45529,45551,45563-45564,45569,45572,45576,45618-45619,45626,45655-45656,45673,45684,45701,45722,45725,45727,45750,45761,45764,45861,45863,45867,45869,45935-45936,45971,45979,45990,45997,46019,46073,46472,46474-46476,46478,46483,46485,46893-46896,47313,47318,47341,47633-47638,47790,47887,47889,47948-47951,47984,48241,48338,48341
</del><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+/branches/5.5:49373-49379,49381
+/trunk:45284-45285,45287,45289,45292,45296,45298,45300-45301,45308-45311,45316,45319,45322,45324,45326,45328,45331,45334,45336,45338,45340,45342,45344-45346,45348,45350,45352,45357,45365,45367,45376,45403,45411,45416,45425,45463,45481,45488,45495,45501-45503,45506-45507,45515,45520,45522,45526-45527,45529,45551,45563-45564,45569,45572,45576,45618-45619,45626,45655-45656,45673,45684,45701,45722,45725,45727,45750,45761,45764,45861,45863,45867,45869,45935-45936,45971,45979,45990,45997,46019,46073,46472,46474-46476,46478,46483,46485,46893-46896,47313,47318,47341,47633-47638,47790,47887,47889,47948-47951,47984,48241,48338,48341,49380,49382-49388
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><a id="branches52srcjs_enqueuesadmincustombackgroundjs"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.2/src/js/_enqueues/admin/custom-background.js</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.2/src/js/_enqueues/admin/custom-background.js  2020-10-29 18:41:43 UTC (rev 49393)
+++ branches/5.2/src/js/_enqueues/admin/custom-background.js    2020-10-29 18:44:12 UTC (rev 49394)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -126,11 +126,13 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        frame.on( 'select', function() {
</span><span class="cx" style="display: block; padding: 0 10px">                                // Grab the selected attachment.
</span><span class="cx" style="display: block; padding: 0 10px">                                var attachment = frame.state().get('selection').first();
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                var nonceValue = $( '#_wpnonce' ).val() || '';
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                                // Run an AJAX request to set the background image.
</span><span class="cx" style="display: block; padding: 0 10px">                                $.post( ajaxurl, {
</span><span class="cx" style="display: block; padding: 0 10px">                                        action: 'set-background-image',
</span><span class="cx" style="display: block; padding: 0 10px">                                        attachment_id: attachment.id,
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                        _ajax_nonce: nonceValue,
</ins><span class="cx" style="display: block; padding: 0 10px">                                         size: 'full'
</span><span class="cx" style="display: block; padding: 0 10px">                                }).done( function() {
</span><span class="cx" style="display: block; padding: 0 10px">                                        // When the request completes, reload the window.
</span></span></pre></div>
<a id="branches52srcjs_enqueuesdeprecatedmediagalleryjs"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.2/src/js/_enqueues/deprecated/media-gallery.js</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.2/src/js/_enqueues/deprecated/media-gallery.js 2020-10-29 18:41:43 UTC (rev 49393)
+++ branches/5.2/src/js/_enqueues/deprecated/media-gallery.js   2020-10-29 18:44:12 UTC (rev 49394)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -11,7 +11,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">         * Adds a click event handler to the element with a 'wp-gallery' class.
</span><span class="cx" style="display: block; padding: 0 10px">         */
</span><span class="cx" style="display: block; padding: 0 10px">        $( 'body' ).bind( 'click.wp-gallery', function(e) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                var target = $( e.target ), id, img_size;
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         var target = $( e.target ), id, img_size, nonceValue;
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                if ( target.hasClass( 'wp-set-header' ) ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        // Opens the image to preview it full size.
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -21,6 +21,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        // Sets the image as background of the theme.
</span><span class="cx" style="display: block; padding: 0 10px">                        id = target.data( 'attachment-id' );
</span><span class="cx" style="display: block; padding: 0 10px">                        img_size = $( 'input[name="attachments[' + id + '][image-size]"]:checked').val();
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                        nonceValue = $( '#_wpnonce' ).val() && '';
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                        /**
</span><span class="cx" style="display: block; padding: 0 10px">                         * This AJAX action has been deprecated since 3.5.0, see custom-background.php
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -28,6 +29,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        jQuery.post(ajaxurl, {
</span><span class="cx" style="display: block; padding: 0 10px">                                action: 'set-background-image',
</span><span class="cx" style="display: block; padding: 0 10px">                                attachment_id: id,
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                _ajax_nonce: nonceValue,
</ins><span class="cx" style="display: block; padding: 0 10px">                                 size: img_size
</span><span class="cx" style="display: block; padding: 0 10px">                        }, function() {
</span><span class="cx" style="display: block; padding: 0 10px">                                var win = window.dialogArguments || opener || parent || top;
</span></span></pre></div>
<a id="branches52srcwpadminadminheaderphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.2/src/wp-admin/admin-header.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.2/src/wp-admin/admin-header.php        2020-10-29 18:41:43 UTC (rev 49393)
+++ branches/5.2/src/wp-admin/admin-header.php  2020-10-29 18:44:12 UTC (rev 49394)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -82,13 +82,13 @@
</span><span class="cx" style="display: block; padding: 0 10px"> $admin_body_class = preg_replace( '/[^a-z0-9_-]+/i', '-', $hook_suffix );
</span><span class="cx" style="display: block; padding: 0 10px"> ?>
</span><span class="cx" style="display: block; padding: 0 10px"> <script type="text/javascript">
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-addLoadEvent = function(func){if(typeof jQuery!="undefined")jQuery(document).ready(func);else if(typeof wpOnload!='function'){wpOnload=func;}else{var oldonload=wpOnload;wpOnload=function(){oldonload();func();}}};
-var ajaxurl = '<?php echo admin_url( 'admin-ajax.php', 'relative' ); ?>',
-       pagenow = '<?php echo $current_screen->id; ?>',
-       typenow = '<?php echo $current_screen->post_type; ?>',
-       adminpage = '<?php echo $admin_body_class; ?>',
-       thousandsSeparator = '<?php echo addslashes( $wp_locale->number_format['thousands_sep'] ); ?>',
-       decimalPoint = '<?php echo addslashes( $wp_locale->number_format['decimal_point'] ); ?>',
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+addLoadEvent = function(func){if(typeof jQuery!=='undefined')jQuery(document).ready(func);else if(typeof wpOnload!=='function'){wpOnload=func;}else{var oldonload=wpOnload;wpOnload=function(){oldonload();func();}}};
+var ajaxurl = '<?php echo esc_js( admin_url( 'admin-ajax.php', 'relative' ) ); ?>',
+       pagenow = '<?php echo esc_js( $current_screen->id ); ?>',
+       typenow = '<?php echo esc_js( $current_screen->post_type ); ?>',
+       adminpage = '<?php echo esc_js( $admin_body_class ); ?>',
+       thousandsSeparator = '<?php echo esc_js( $wp_locale->number_format['thousands_sep'] ); ?>',
+       decimalPoint = '<?php echo esc_js( $wp_locale->number_format['decimal_point'] ); ?>',
</ins><span class="cx" style="display: block; padding: 0 10px">         isRtl = <?php echo (int) is_rtl(); ?>;
</span><span class="cx" style="display: block; padding: 0 10px"> </script>
</span><span class="cx" style="display: block; padding: 0 10px"> <meta name="viewport" content="width=device-width,initial-scale=1.0">
</span></span></pre></div>
<a id="branches52srcwpadmincustombackgroundphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.2/src/wp-admin/custom-background.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.2/src/wp-admin/custom-background.php   2020-10-29 18:41:43 UTC (rev 49393)
+++ branches/5.2/src/wp-admin/custom-background.php     2020-10-29 18:44:12 UTC (rev 49394)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -574,6 +574,8 @@
</span><span class="cx" style="display: block; padding: 0 10px">         * @deprecated 3.5.0
</span><span class="cx" style="display: block; padding: 0 10px">         */
</span><span class="cx" style="display: block; padding: 0 10px">        public function wp_set_background_image() {
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                check_ajax_referer( 'custom-background' );
+
</ins><span class="cx" style="display: block; padding: 0 10px">                 if ( ! current_user_can( 'edit_theme_options' ) || ! isset( $_POST['attachment_id'] ) ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        exit;
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span></span></pre></div>
<a id="branches52srcwpadmincustomheaderphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.2/src/wp-admin/custom-header.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.2/src/wp-admin/custom-header.php       2020-10-29 18:41:43 UTC (rev 49393)
+++ branches/5.2/src/wp-admin/custom-header.php 2020-10-29 18:44:12 UTC (rev 49394)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -338,7 +338,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                ?>
</span><span class="cx" style="display: block; padding: 0 10px"> <script type="text/javascript">
</span><span class="cx" style="display: block; padding: 0 10px"> (function($){
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        var default_color = '<?php echo $default_color; ?>',
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ var default_color = '<?php echo esc_js( $default_color ); ?>',
</ins><span class="cx" style="display: block; padding: 0 10px">                 header_text_fields;
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        function pickColor(color) {
</span></span></pre></div>
<a id="branches52srcwpadminincludesmediaphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.2/src/wp-admin/includes/media.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.2/src/wp-admin/includes/media.php      2020-10-29 18:41:43 UTC (rev 49393)
+++ branches/5.2/src/wp-admin/includes/media.php        2020-10-29 18:44:12 UTC (rev 49394)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -500,7 +500,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">        ?>
</span><span class="cx" style="display: block; padding: 0 10px"> <script type="text/javascript">
</span><span class="cx" style="display: block; padding: 0 10px"> addLoadEvent = function(func){if(typeof jQuery!="undefined")jQuery(document).ready(func);else if(typeof wpOnload!='function'){wpOnload=func;}else{var oldonload=wpOnload;wpOnload=function(){oldonload();func();}}};
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-var ajaxurl = '<?php echo admin_url( 'admin-ajax.php', 'relative' ); ?>', pagenow = 'media-upload-popup', adminpage = 'media-upload-popup',
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+var ajaxurl = '<?php echo esc_js( admin_url( 'admin-ajax.php', 'relative' ) ); ?>', pagenow = 'media-upload-popup', adminpage = 'media-upload-popup',
</ins><span class="cx" style="display: block; padding: 0 10px"> isRtl = <?php echo (int) is_rtl(); ?>;
</span><span class="cx" style="display: block; padding: 0 10px"> </script>
</span><span class="cx" style="display: block; padding: 0 10px">        <?php
</span></span></pre></div>
<a id="branches52srcwpadminincludesmsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.2/src/wp-admin/includes/ms.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.2/src/wp-admin/includes/ms.php 2020-10-29 18:41:43 UTC (rev 49393)
+++ branches/5.2/src/wp-admin/includes/ms.php   2020-10-29 18:44:12 UTC (rev 49394)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -885,7 +885,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> function _thickbox_path_admin_subfolder() {
</span><span class="cx" style="display: block; padding: 0 10px">        ?>
</span><span class="cx" style="display: block; padding: 0 10px"> <script type="text/javascript">
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-var tb_pathToImage = "<?php echo includes_url( 'js/thickbox/loadingAnimation.gif', 'relative' ); ?>";
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+var tb_pathToImage = "<?php echo esc_js( includes_url( 'js/thickbox/loadingAnimation.gif', 'relative' ) ); ?>";
</ins><span class="cx" style="display: block; padding: 0 10px"> </script>
</span><span class="cx" style="display: block; padding: 0 10px">        <?php
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span></span></pre></div>
<a id="branches52srcwpadminincludestemplatephp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.2/src/wp-admin/includes/template.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.2/src/wp-admin/includes/template.php   2020-10-29 18:41:43 UTC (rev 49393)
+++ branches/5.2/src/wp-admin/includes/template.php     2020-10-29 18:44:12 UTC (rev 49394)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1916,12 +1916,12 @@
</span><span class="cx" style="display: block; padding: 0 10px"> <script type="text/javascript">
</span><span class="cx" style="display: block; padding: 0 10px"> addLoadEvent = function(func){if(typeof jQuery!="undefined")jQuery(document).ready(func);else if(typeof wpOnload!='function'){wpOnload=func;}else{var oldonload=wpOnload;wpOnload=function(){oldonload();func();}}};
</span><span class="cx" style="display: block; padding: 0 10px"> function tb_close(){var win=window.dialogArguments||opener||parent||top;win.tb_remove();}
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-var ajaxurl = '<?php echo admin_url( 'admin-ajax.php', 'relative' ); ?>',
-       pagenow = '<?php echo $current_screen->id; ?>',
-       typenow = '<?php echo $current_screen->post_type; ?>',
-       adminpage = '<?php echo $admin_body_class; ?>',
-       thousandsSeparator = '<?php echo addslashes( $wp_locale->number_format['thousands_sep'] ); ?>',
-       decimalPoint = '<?php echo addslashes( $wp_locale->number_format['decimal_point'] ); ?>',
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+var ajaxurl = '<?php echo esc_js( admin_url( 'admin-ajax.php', 'relative' ) ); ?>',
+       pagenow = '<?php echo esc_js( $current_screen->id ); ?>',
+       typenow = '<?php echo esc_js( $current_screen->post_type ); ?>',
+       adminpage = '<?php echo esc_js( $admin_body_class ); ?>',
+       thousandsSeparator = '<?php echo esc_js( $wp_locale->number_format['thousands_sep'] ); ?>',
+       decimalPoint = '<?php echo esc_js( $wp_locale->number_format['decimal_point'] ); ?>',
</ins><span class="cx" style="display: block; padding: 0 10px">         isRtl = <?php echo (int) is_rtl(); ?>;
</span><span class="cx" style="display: block; padding: 0 10px"> </script>
</span><span class="cx" style="display: block; padding: 0 10px">        <?php
</span></span></pre></div>
<a id="branches52srcwpadminmedianewphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.2/src/wp-admin/media-new.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.2/src/wp-admin/media-new.php   2020-10-29 18:41:43 UTC (rev 49393)
+++ branches/5.2/src/wp-admin/media-new.php     2020-10-29 18:44:12 UTC (rev 49394)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -77,9 +77,9 @@
</span><span class="cx" style="display: block; padding: 0 10px">        <?php media_upload_form(); ?>
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        <script type="text/javascript">
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        var post_id = <?php echo $post_id; ?>, shortform = 3;
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ var post_id = <?php echo absint( $post_id ); ?>, shortform = 3;
</ins><span class="cx" style="display: block; padding: 0 10px">         </script>
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        <input type="hidden" name="post_id" id="post_id" value="<?php echo $post_id; ?>" />
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ <input type="hidden" name="post_id" id="post_id" value="<?php echo absint( $post_id ); ?>" />
</ins><span class="cx" style="display: block; padding: 0 10px">         <?php wp_nonce_field( 'media-form' ); ?>
</span><span class="cx" style="display: block; padding: 0 10px">        <div id="media-items" class="hide-if-no-js"></div>
</span><span class="cx" style="display: block; padding: 0 10px">        </form>
</span></span></pre></div>
<a id="branches52srcwpadminnetworksiteusersphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.2/src/wp-admin/network/site-users.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.2/src/wp-admin/network/site-users.php  2020-10-29 18:41:43 UTC (rev 49393)
+++ branches/5.2/src/wp-admin/network/site-users.php    2020-10-29 18:44:12 UTC (rev 49394)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -217,7 +217,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> require( ABSPATH . 'wp-admin/admin-header.php' ); ?>
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px"> <script type="text/javascript">
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-var current_site_id = <?php echo $id; ?>;
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+var current_site_id = <?php echo absint( $id ); ?>;
</ins><span class="cx" style="display: block; padding: 0 10px"> </script>
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span></span></pre></div>
<a id="branches52srcwpincludesRequestsUtilityFilteredIteratorphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.2/src/wp-includes/Requests/Utility/FilteredIterator.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.2/src/wp-includes/Requests/Utility/FilteredIterator.php        2020-10-29 18:41:43 UTC (rev 49393)
+++ branches/5.2/src/wp-includes/Requests/Utility/FilteredIterator.php  2020-10-29 18:44:12 UTC (rev 49394)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -42,4 +42,17 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $value = call_user_func($this->callback, $value);
</span><span class="cx" style="display: block; padding: 0 10px">                return $value;
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+       /**
+        * @inheritdoc
+        */
+       public function unserialize( $serialized ) {
+       }
+
+       /**
+        * @inheritdoc
+        */
+       public function __unserialize( $serialized ) { // phpcs:ignore PHPCompatibility.FunctionNameRestrictions.ReservedFunctionNames.MethodDoubleUnderscore,PHPCompatibility.FunctionNameRestrictions.NewMagicMethods.__unserializeFound
+               $this->unserialize( $serialized );
+       }
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span></span></pre></div>
<a id="branches52srcwpincludesclasswpxmlrpcserverphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.2/src/wp-includes/class-wp-xmlrpc-server.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.2/src/wp-includes/class-wp-xmlrpc-server.php   2020-10-29 18:41:43 UTC (rev 49393)
+++ branches/5.2/src/wp-includes/class-wp-xmlrpc-server.php     2020-10-29 18:44:12 UTC (rev 49394)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -3829,6 +3829,21 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        return new IXR_Error( 403, __( 'Comment is required.' ) );
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                if (
+                       'publish' === get_post_status( $post_id ) &&
+                       ! current_user_can( 'edit_post', $post_id ) &&
+                       post_password_required( $post_id )
+               ) {
+                       return new IXR_Error( 403, __( 'Sorry, you are not allowed to comment on this post.' ) );
+               }
+
+               if (
+                       'private' === get_post_status( $post_id ) &&
+                       ! current_user_can( 'read_post', $post_id )
+               ) {
+                       return new IXR_Error( 403, __( 'Sorry, you are not allowed to comment on this post.' ) );
+               }
+
</ins><span class="cx" style="display: block; padding: 0 10px">                 $comment = array(
</span><span class="cx" style="display: block; padding: 0 10px">                        'comment_post_ID' => $post_id,
</span><span class="cx" style="display: block; padding: 0 10px">                        'comment_content' => $content_struct['content'],
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -4233,7 +4248,8 @@
</span><span class="cx" style="display: block; padding: 0 10px">                /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
</span><span class="cx" style="display: block; padding: 0 10px">                do_action( 'xmlrpc_call', 'wp.getMediaItem' );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                if ( ! $attachment = get_post( $attachment_id ) ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $attachment = get_post( $attachment_id );
+               if ( ! $attachment || 'attachment' !== $attachment->post_type ) {
</ins><span class="cx" style="display: block; padding: 0 10px">                         return new IXR_Error( 404, __( 'Invalid attachment ID.' ) );
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span></span></pre></div>
<a id="branches52srcwpincludesembedphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.2/src/wp-includes/embed.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.2/src/wp-includes/embed.php    2020-10-29 18:41:43 UTC (rev 49393)
+++ branches/5.2/src/wp-includes/embed.php      2020-10-29 18:44:12 UTC (rev 49394)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -604,7 +604,12 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $sites = get_sites( $qv );
</span><span class="cx" style="display: block; padding: 0 10px">                $site  = reset( $sites );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                if ( $site && (int) $site->blog_id !== get_current_blog_id() ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         // Do not allow embeds for deleted/archived/spam sites.
+               if ( ! empty( $site->deleted ) || ! empty( $site->spam ) || ! empty( $site->archived ) ) {
+                       return false;
+               }
+
+               if ( $site && get_current_blog_id() !== (int) $site->blog_id ) {
</ins><span class="cx" style="display: block; padding: 0 10px">                         switch_to_blog( $site->blog_id );
</span><span class="cx" style="display: block; padding: 0 10px">                        $switched_blog = true;
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span></span></pre></div>
<a id="branches52srcwpincludesfunctionsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.2/src/wp-includes/functions.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.2/src/wp-includes/functions.php        2020-10-29 18:41:43 UTC (rev 49393)
+++ branches/5.2/src/wp-includes/functions.php  2020-10-29 18:44:12 UTC (rev 49394)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1566,7 +1566,8 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        continue;
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                if ( ! $wpdb->get_results( "DESCRIBE $table;" ) ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $described_table = $wpdb->get_results( "DESCRIBE $table;" );
+               if ( is_array( $described_table ) && count( $described_table ) === 0 ) {
</ins><span class="cx" style="display: block; padding: 0 10px">                         continue;
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span></span></pre></div>
<a id="branches52srcwpincludesmetaphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.2/src/wp-includes/meta.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.2/src/wp-includes/meta.php     2020-10-29 18:41:43 UTC (rev 49393)
+++ branches/5.2/src/wp-includes/meta.php       2020-10-29 18:44:12 UTC (rev 49394)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1030,8 +1030,9 @@
</span><span class="cx" style="display: block; padding: 0 10px">  * @param string|null $meta_type Optional. Type of object metadata is for (e.g., comment, post, term, or user).
</span><span class="cx" style="display: block; padding: 0 10px">  * @return bool Whether the meta key is considered protected.
</span><span class="cx" style="display: block; padding: 0 10px">  */
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-function is_protected_meta( $meta_key, $meta_type = null ) {
-       $protected = ( '_' == $meta_key[0] );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+function is_protected_meta( $meta_key, $meta_type = '' ) {
+       $sanitized_key = preg_replace( "/[^\x20-\x7E\p{L}]/", '', $meta_key );
+       $protected     = strlen( $sanitized_key ) > 0 && ( '_' === $sanitized_key[0] );
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        /**
</span><span class="cx" style="display: block; padding: 0 10px">         * Filters whether a meta key is considered protected.
</span></span></pre></div>
<a id="branches52testsphpunittestsfunctionsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.2/tests/phpunit/tests/functions.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.2/tests/phpunit/tests/functions.php    2020-10-29 18:41:43 UTC (rev 49393)
+++ branches/5.2/tests/phpunit/tests/functions.php      2020-10-29 18:44:12 UTC (rev 49394)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -238,6 +238,30 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        /**
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         * @dataProvider data_serialize_deserialize_objects
+        */
+       function test_deserialize_request_utility_filtered_iterator_objects( $value ) {
+               $serialized = maybe_serialize( $value );
+               if ( is_array( $value ) ) {
+                       $deserialized = unserialize( $serialized );
+                       $this->assertNotEquals( reset( $value )->count(), reset( $deserialized )->count() );
+               } elseif ( get_class( $value ) === 'Requests_Utility_FilteredIterator' ) {
+                       $this->assertNotEquals( $value->count(), unserialize( $serialized )->count() );
+               } else {
+                       $this->assertEquals( $value->count(), unserialize( $serialized )->count() );
+               }
+       }
+
+       function data_serialize_deserialize_objects() {
+               return array(
+                       array( new Requests_Utility_FilteredIterator( array( 1 ), 'md5' ) ),
+                       array( new Requests_Utility_FilteredIterator( array( 1, 2 ), 'sha1' ) ),
+                       array( new ArrayIterator( array( 1, 2, 3 ) ) ),
+                       array( array( new Requests_Utility_FilteredIterator( array( 1 ), 'md5' ) ) ),
+               );
+       }
+
+       /**
</ins><span class="cx" style="display: block; padding: 0 10px">          * @group add_query_arg
</span><span class="cx" style="display: block; padding: 0 10px">         */
</span><span class="cx" style="display: block; padding: 0 10px">        function test_add_query_arg() {
</span></span></pre></div>
<a id="branches52testsphpunittestsmetaisProtectedMetaphp"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: branches/5.2/tests/phpunit/tests/meta/isProtectedMeta.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.2/tests/phpunit/tests/meta/isProtectedMeta.php                         (rev 0)
+++ branches/5.2/tests/phpunit/tests/meta/isProtectedMeta.php   2020-10-29 18:44:12 UTC (rev 49394)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,55 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+<?php
+
+/**
+ * @group meta
+ * @covers ::is_protected_meta
+ */
+class Tests_Meta_isProtectedMeta extends WP_UnitTestCase {
+
+       /**
+        * @dataProvider protected_data
+        */
+       public function test_protected( $key ) {
+               $this->assertTrue( is_protected_meta( $key ) );
+       }
+
+       public function protected_data() {
+               $protected_keys = array(
+                       array( '_wp_attachment' ),
+               );
+               for ( $i = 0, $max = 31; $i < $max; $i ++ ) {
+                       $protected_keys[] = array( chr( $i ) . '_wp_attachment' );
+               }
+               for ( $i = 127, $max = 159; $i <= $max; $i ++ ) {
+                       $protected_keys[] = array( chr( $i ) . '_wp_attachment' );
+               }
+               $protected_keys[] = array( chr( 95 ) . '_wp_attachment' );
+
+               return $protected_keys;
+       }
+
+       /**
+        * @dataProvider unprotected_data
+        */
+       public function test_unprotected( $key ) {
+               $this->assertFalse( is_protected_meta( $key ) );
+       }
+
+       public function unprotected_data() {
+               $unprotected_keys = array(
+                       array( 'singleword' ),
+                       array( 'two_words' ),
+                       array( 'ąŌ_not_so_protected_meta' ),
+               );
+
+               for ( $i = 32, $max = 94; $i <= $max; $i ++ ) {
+                       $unprotected_keys[] = array( chr( $i ) . '_wp_attachment' );
+               }
+               for ( $i = 96, $max = 126; $i <= $max; $i ++ ) {
+                       $unprotected_keys[] = array( chr( $i ) . '_wp_attachment' );
+               }
+
+               return $unprotected_keys;
+       }
+
+}
</ins></span></pre></div>
<a id="branches52testsphpunittestsmultisitesitephp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.2/tests/phpunit/tests/multisite/site.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.2/tests/phpunit/tests/multisite/site.php       2020-10-29 18:41:43 UTC (rev 49393)
+++ branches/5.2/tests/phpunit/tests/multisite/site.php 2020-10-29 18:44:12 UTC (rev 49394)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -474,6 +474,36 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        remove_action( 'make_ham_blog', array( $this, '_action_counter_cb' ), 10 );
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                function test_content_from_spam_blog_is_not_available() {
+                       $spam_blog_id = self::factory()->blog->create();
+                       switch_to_blog( $spam_blog_id );
+                       $post_data      = array(
+                               'post_title'   => 'Hello World!',
+                               'post_content' => 'Hello world content',
+                       );
+                       $post_id        = self::factory()->post->create( $post_data );
+                       $post           = get_post( $post_id );
+                       $spam_permalink = site_url() . '/?p=' . $post->ID;
+                       $spam_embed_url = get_post_embed_url( $post_id );
+
+                       restore_current_blog();
+                       $this->assertNotEmpty( $spam_permalink );
+                       $this->assertEquals( $post_data['post_title'], $post->post_title );
+
+                       update_blog_status( $spam_blog_id, 'spam', 1 );
+
+                       $post_id = self::factory()->post->create(
+                               array(
+                                       'post_content' => "\n $spam_permalink \n",
+                               )
+                       );
+                       $post    = get_post( $post_id );
+                       $content = apply_filters( 'the_content', $post->post_content );
+
+                       $this->assertNotContains( $post_data['post_title'], $content );
+                       $this->assertNotContains( "src=\"{$spam_embed_url}#?", $content );
+               }
+
</ins><span class="cx" style="display: block; padding: 0 10px">                 function test_update_blog_status_make_spam_blog_action() {
</span><span class="cx" style="display: block; padding: 0 10px">                        global $test_action_counter;
</span><span class="cx" style="display: block; padding: 0 10px">                        $test_action_counter = 0;
</span></span></pre>
</div>
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