The YouTube Embed WordPress plugin before 5.2.2 does not validate, escape or sanitise some of its shortcode attributes, leading to Stored XSS issues by 1. using w, h, controls, cc_lang, color, language, start, stop, or style parameter of youtube shortcode, 2. by using style, class, rel, target, width, height, or alt parameter of youtube_thumb shortcode, or 3. by embedding a video whose title or description contains XSS payload (if API key is configured).
CVE-2021-24471 is a medium severity with CVSS 6.4 Stored Cross-Site Scripting issue affecting the Plugin Embeds for YouTube. It affects Versions up to 5.2.1 and is fixed in 5.2.2.
CVE-2021-24471 is tracked for the Plugin Embeds for YouTube as medium severity with CVSS 6.4. The affected range is Versions up to 5.2.1. Update Embeds for YouTube to 5.2.2 or newer where that version is compatible with the site.
| Software Type | Plugin |
|---|---|
| Software Slug |
youtube-embed
View on wordpress.org
|
| CVE | CVE-2021-24471 |
| Patched Versions |
5.2.2
|
| Affected Versions |
Versions up to 5.2.1
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
YouTube Embed <= 5.4 - Authenticated (Contributor+) Stored Cross-Site Scripting
YouTube Embed <= 3.3.2 - Cross-Site Scripting
YouTube Embed <= 5.3.1 - Authenticated (Administrator+) Stored Cross-Site Scripting
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