Stored Cross-Site Scripting in WWBN AVideo UserGroups Management
CVE-2026-89243

9.2CRITICAL

Key Information:

Vendor

Wwbn

Status
Avideo
Vendor
CVE Published:
11 September 2026

What is CVE-2026-89243?

The vulnerability in WWBN AVideo allows administrators to input unsanitized data into the UserGroups::setGroup_name() function. This leads to the execution of malicious HTML and JavaScript when other administrators visit the user management interface, potentially compromising the security of the system. Proper input sanitization measures are essential to prevent such vulnerabilities.

Affected Version(s)

AVideo 0

References

https://github.com/WWBN/AVideo/security/advisories/GHSA-q...
vendor-advisory
https://www.vulncheck.com/advisories/wwbn-avideo-stored-x...
third-party-advisory

CVSS V4

Score:
9.2
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

santhreal
.