Stored Cross-Site Scripting Vulnerability in AVideo by WWBN
CVE-2026-89254

9.3CRITICAL

Key Information:

Vendor

Wwbn

Status
Avideo
Vendor
CVE Published:
11 September 2026

What is CVE-2026-89254?

AVideo has a stored cross-site scripting vulnerability in the CustomizeUser plugin, where the field_name parameter is stored without proper sanitization. This exposure allows administrators to introduce malicious scripts through the add.json.php endpoint, resulting in the execution of those scripts when users view additional information pages or profile forms that utilize the typeToHTML function. This vulnerability highlights the importance of input validation and proper sanitization practices in web applications.

Affected Version(s)

AVideo 0

References

https://github.com/WWBN/AVideo/security/advisories/GHSA-7...
vendor-advisory
https://www.vulncheck.com/advisories/avideo-customizeuser...
third-party-advisory

CVSS V4

Score:
9.3
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
.