CVE-2026-41061: WWBN AVideo has Stored XSS via Unanchored Duration Regex in Video Encoder Receiver

April 14, 2026 (updated April 24, 2026)

The isValidDuration() regex at objects/video.php:918 uses /^[0-9]{1,2}:[0-9]{1,2}:[0-9]{1,2}/ without a $ end anchor, allowing arbitrary HTML/JavaScript to be appended after a valid duration prefix. The crafted duration is stored in the database and rendered without HTML escaping via echo Video::getCleanDuration() on trending pages, playlist pages, and video gallery thumbnails, resulting in stored cross-site scripting.

References

github.com/WWBN/AVideo
github.com/WWBN/AVideo/commit/bcba324644df8b4ed1f891462455f1cd26822a45
github.com/WWBN/AVideo/security/advisories/GHSA-8pv3-29pp-pf8f
github.com/advisories/GHSA-8pv3-29pp-pf8f
nvd.nist.gov/vuln/detail/CVE-2026-41061

Code Behaviors & Features

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