vulnerability
WordPress Plugin: youtube-embed: CVE-2021-24471: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 2 | (AV:N/AC:H/Au:S/C:N/I:P/A:N) | Jul 19, 2021 | May 15, 2025 | Apr 29, 2026 |
Severity
2
CVSS
(AV:N/AC:H/Au:S/C:N/I:P/A:N)
Published
Jul 19, 2021
Added
May 15, 2025
Modified
Apr 29, 2026
Description
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).
Solution
youtube-embed-plugin-cve-2021-24471
References
Rapid7 Labs
2026 Global Threat Landscape Report
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