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<title>[55768] branches/6.2/src/js/_enqueues/wp/embed.js: Embeds: Add protocol validation for WordPress Embed code.</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/55768">55768</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/55768","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>audrasjb</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2023-05-16 14:45:37 +0000 (Tue, 16 May 2023)</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'>Embeds: Add protocol validation for WordPress Embed code.
Validate that links within auto-discovered embeds are using the `http` or `https` protocols before following links.
Props xknown, dd32, peterwilsoncc.
Merges <a href="https://core.trac.wordpress.org/changeset/55763">[55763]</a> to branch 6.2.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#branches62srcjs_enqueueswpembedjs">branches/6.2/src/js/_enqueues/wp/embed.js</a></li>
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<h3>Diff</h3>
<a id="branches62srcjs_enqueueswpembedjs"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/6.2/src/js/_enqueues/wp/embed.js</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/6.2/src/js/_enqueues/wp/embed.js 2023-05-16 14:43:46 UTC (rev 55767)
+++ branches/6.2/src/js/_enqueues/wp/embed.js 2023-05-16 14:45:37 UTC (rev 55768)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -49,6 +49,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> var iframes = document.querySelectorAll( 'iframe[data-secret="' + data.secret + '"]' ),
</span><span class="cx" style="display: block; padding: 0 10px"> blockquotes = document.querySelectorAll( 'blockquote[data-secret="' + data.secret + '"]' ),
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ allowedProtocols = new RegExp( '^https?:$', 'i' ),
</ins><span class="cx" style="display: block; padding: 0 10px"> i, source, height, sourceURL, targetURL;
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> for ( i = 0; i < blockquotes.length; i++ ) {
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -84,6 +85,11 @@
</span><span class="cx" style="display: block; padding: 0 10px"> sourceURL.href = source.getAttribute( 'src' );
</span><span class="cx" style="display: block; padding: 0 10px"> targetURL.href = data.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">+ /* Only follow link if the protocol is in the allow list. */
+ if ( ! allowedProtocols.test( targetURL.protocol ) ) {
+ continue;
+ }
+
</ins><span class="cx" style="display: block; padding: 0 10px"> /* Only continue if link hostname matches iframe's hostname. */
</span><span class="cx" style="display: block; padding: 0 10px"> if ( targetURL.host === sourceURL.host ) {
</span><span class="cx" style="display: block; padding: 0 10px"> if ( document.activeElement === source ) {
</span></span></pre>
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