YouTube Subscribe <= 3.0.0 - Authenticated (Admin+) Stored Cross-Site Scripting via Title and Channel ID
Vulnerability Description
The YouTube Subscribe plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 3.0.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- ZAST.AI
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/9996cdc7-4d97-4b27-b697-09bbdbcd865d?source=cve
- https://wordpress.org/plugins/easy-youtube-subscribe/
- https://plugins.trac.wordpress.org/browser/easy-youtube-subscribe/tags/3.0.0/includes/sm-youtube-subscription-shortcode.php#L242
- https://plugins.trac.wordpress.org/browser/easy-youtube-subscribe/tags/3.0.0/includes/sm-youtube-subscription-shortcode.php#L246
Affected Vendor
mahabubs
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