Vulnerability · Published Sep 11, 2026 · Assigned by VulnCheck
CVE-2026-89243WWBN AVideo Stored XSS via UserGroups setGroup_name
High 8.1
In plain English
A high-severity cross-site scripting in AVideo from WWBN. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.4%top 67.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a stored cross-site scripting vulnerability in UserGroups::setGroup_name() that fails to sanitize group_name input. Administrators with canAdminUserGroups permission can inject malicious HTML and JavaScript that executes in the browser when other administrators access the user manager interface.
Affected products (as reported)
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N
References
- GitHub Security Advisory (GHSA-qm3h-2jrx-xmg6) vendor-advisory
- VulnCheck Advisory: WWBN AVideo Stored XSS via UserGroups setGroup_name third-party-advisory