What’s Vulnerable › Vulnerabilities

CVE-2023-4841: Feeds for YouTube <= 2.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-09-14 · updated 2026-06-17
• Weakness: CWE-79

Description

The Feeds for YouTube plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'youtube-feed' shortcode in versions up to, and including, 2.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

• smub Feeds for YouTube (YouTube video, channel, and gallery plugin): through 2.1

References

• https://plugins.trac.wordpress.org/browser/feeds-for-youtube/tags/2.1/templates/feed.php#L33
• https://plugins.trac.wordpress.org/changeset/2966017/feeds-for-youtube#file564
• https://www.wordfence.com/threat-intel/vulnerabilities/id/376e2638-a873-4142-ad7d-067ae3333709?source=cve
• https://plugins.trac.wordpress.org/browser/feeds-for-youtube/tags/2.1/templates/feed.php#L33
• https://plugins.trac.wordpress.org/changeset/2966017/feeds-for-youtube#file564
• https://www.wordfence.com/threat-intel/vulnerabilities/id/376e2638-a873-4142-ad7d-067ae3333709?source=cve

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