CVE-2026-88866
WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a stored cross-site scripting vulnerability in the LoginControl plugin that fails to encode the User-Agent header before storing it in login history. Attackers with any valid login account can inject malicious scripts in the User-Agent header that execute in administrator browsers when viewing the Login History page, allowing script execution within the administrator session.
- Published Sep 10, 2026
- CVSS 9.3 critical
- 0.4% chance of exploitation in the next 30 days (EPSS)