Cross-site scripting in AVideo - CVE-2026-50182
Published: November 11, 2026
Vulnerability identifier: #VU165922
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2026-50182
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary JavaScript under the AVideo origin in a victim's browser, read non-HttpOnly cookies, and perform actions as the victim.
The vulnerability exists due to improper output encoding in plugin/YouTubeAPI/gallerySection.php when embedding the search parameter into pagination links, with the Layout plugin relocating injected scripts into executable content. A remote attacker can trick a victim into opening a crafted URL containing video"><script>alert(1337)</script> in the search parameter to execute arbitrary JavaScript.
Affected software
AVideo
How to mitigate CVE-2026-50182
Install security update from vendor's website.
AVideo - update to 29.1.0