CVE-2026-110531

Description

The FV Player 8 plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'fv_player_videos' parameter in all versions up to, and including, 8.1.9 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires the administrator-controlled "Allow visitors to upload videos to their profile" setting to be enabled, without which the vulnerable save routine is inaccessible to Subscriber-level users.

References

• https://github.com/foliovision/fv-wordpress-flowplayer/commit/1c936e8100989c34e08415adfcb5ea3db2109902
• https://plugins.trac.wordpress.org/browser/fv-player/trunk/freedom-video-player/modules/overlay-popup.module.js#L95
• https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/custom-videos.php#L115
• https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/custom-videos.php#L757
• https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/custom-videos.php#L790