# CVE-2026-89243

## Summary

- **CVE ID:** CVE-2026-89243
- **Severity:** CRITICAL
- **CVSS Score:** 9.2 (CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N)
- **CWE:** CWE-79
- **Published:** Sep 11, 2026
- **Last Modified:** Sep 11, 2026

## 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

- WWBN — AVideo (0)

## References

- [CNA](https://github.com/WWBN/AVideo/security/advisories/GHSA-qm3h-2jrx-xmg6)
- [CNA](https://www.vulncheck.com/advisories/wwbn-avideo-stored-xss-via-usergroups-setgroup-name)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.36%
- **EPSS Percentile:** 29.8

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._