High severity · published Sep 11, 2026
CVE-2026-89254
AVideo CustomizeUser Stored XSS via field_name Parameter
8.7
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
High
Integrity
High
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AV
AVideo · WWBN
through c3edcc274c389816d434acadac07ee78eaf330c1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89254
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-89254
github.com
https://github.com/WWBN/AVideo/security/advisories/GHSA-7hj4-f9x4-gg7p
www.vulncheck.com
https://www.vulncheck.com/advisories/avideo-customizeuser-stored-xss-via-field-name-parameter
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