Vulnerability · Published Sep 11, 2026 · Assigned by VulnCheck

CVE-2026-89254AVideo CustomizeUser Stored XSS via field_name Parameter

High 8.7

In plain English

A high-severity cross-site scripting in AVideo from WWBN. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities).

Severity (CVSS 3.1)8.7High

Exploit odds (30 days)0.4%top 69.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a stored cross-site scripting vulnerability in the CustomizeUser plugin where the field_name parameter is stored raw without sanitization. Administrators can inject malicious scripts via the add.json.php endpoint that execute when viewing extra info pages or profile forms that render the typeToHTML function.

Affected products (as reported)

Vendor	Product	Versions
WWBN	AVideo	0 – through c3edcc274c389816d434acadac07ee78eaf330c1

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

References

GitHub Security Advisory (GHSA-7hj4-f9x4-gg7p) vendor-advisory
VulnCheck Advisory: AVideo CustomizeUser Stored XSS via field_name Parameter third-party-advisory