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<title>[58023] trunk/src/wp-login.php: Login and Registration: Check that `redirect_to` is a string in `wp-login.php`.</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/58023">58023</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/58023","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>SergeyBiryukov</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2024-04-18 06:22:19 +0000 (Thu, 18 Apr 2024)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Login and Registration: Check that `redirect_to` is a string in `wp-login.php`.
This prevents a fatal error if an array is passed instead.
Follow-up to <a href="https://core.trac.wordpress.org/changeset/2876">[2876]</a>, <a href="https://core.trac.wordpress.org/changeset/4969">[4969]</a>, <a href="https://core.trac.wordpress.org/changeset/7524">[7524]</a>, <a href="https://core.trac.wordpress.org/changeset/8701">[8701]</a>, <a href="https://core.trac.wordpress.org/changeset/25701">[25701]</a>, <a href="https://core.trac.wordpress.org/changeset/31417">[31417]</a>, <a href="https://core.trac.wordpress.org/changeset/49109">[49109]</a>.
Props TimoTijhof.
Fixes <a href="https://core.trac.wordpress.org/ticket/59373">#59373</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwploginphp">trunk/src/wp-login.php</a></li>
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<h3>Diff</h3>
<a id="trunksrcwploginphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-login.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-login.php 2024-04-18 03:15:50 UTC (rev 58022)
+++ trunk/src/wp-login.php 2024-04-18 06:22:19 UTC (rev 58023)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -792,7 +792,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> wp_logout();
</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 ( ! empty( $_REQUEST['redirect_to'] ) ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ if ( ! empty( $_REQUEST['redirect_to'] ) && is_string( $_REQUEST['redirect_to'] ) ) {
</ins><span class="cx" style="display: block; padding: 0 10px"> $redirect_to = $_REQUEST['redirect_to'];
</span><span class="cx" style="display: block; padding: 0 10px"> $requested_redirect_to = $redirect_to;
</span><span class="cx" style="display: block; padding: 0 10px"> } else {
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1296,7 +1296,7 @@
</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><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- if ( isset( $_REQUEST['redirect_to'] ) ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ if ( isset( $_REQUEST['redirect_to'] ) && is_string( $_REQUEST['redirect_to'] ) ) {
</ins><span class="cx" style="display: block; padding: 0 10px"> $redirect_to = $_REQUEST['redirect_to'];
</span><span class="cx" style="display: block; padding: 0 10px"> // Redirect to HTTPS if user wants SSL.
</span><span class="cx" style="display: block; padding: 0 10px"> if ( $secure_cookie && str_contains( $redirect_to, 'wp-admin' ) ) {
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1334,7 +1334,8 @@
</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><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- $requested_redirect_to = isset( $_REQUEST['redirect_to'] ) ? $_REQUEST['redirect_to'] : '';
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $requested_redirect_to = isset( $_REQUEST['redirect_to'] ) && is_string( $_REQUEST['redirect_to'] ) ? $_REQUEST['redirect_to'] : '';
+
</ins><span class="cx" style="display: block; padding: 0 10px"> /**
</span><span class="cx" style="display: block; padding: 0 10px"> * Filters the login redirect URL.
</span><span class="cx" style="display: block; padding: 0 10px"> *
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1438,7 +1439,9 @@
</span><span class="cx" style="display: block; padding: 0 10px"> $errors->add( 'updated', __( '<strong>You have successfully updated WordPress!</strong> Please log back in to see what’s new.' ), 'message' );
</span><span class="cx" style="display: block; padding: 0 10px"> } elseif ( WP_Recovery_Mode_Link_Service::LOGIN_ACTION_ENTERED === $action ) {
</span><span class="cx" style="display: block; padding: 0 10px"> $errors->add( 'enter_recovery_mode', __( 'Recovery Mode Initialized. Please log in to continue.' ), 'message' );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- } elseif ( isset( $_GET['redirect_to'] ) && str_contains( $_GET['redirect_to'], 'wp-admin/authorize-application.php' ) ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ } elseif ( isset( $_GET['redirect_to'] ) && is_string( $_GET['redirect_to'] )
+ && str_contains( $_GET['redirect_to'], 'wp-admin/authorize-application.php' )
+ ) {
</ins><span class="cx" style="display: block; padding: 0 10px"> $query_component = wp_parse_url( $_GET['redirect_to'], PHP_URL_QUERY );
</span><span class="cx" style="display: block; padding: 0 10px"> $query = array();
</span><span class="cx" style="display: block; padding: 0 10px"> if ( $query_component ) {
</span></span></pre>
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