CVE-2026-89254 AVideo - Stored XSS

AVideo contains a stored XSS caused by unsanitized field_name parameter in CustomizeUser plugin via add.json.php, letting administrators inject scripts that execute on extra info or profile pages, exploit requires admin privileges.

CVSS base score 8.7 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.37% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Stored XSS
Impact
Stored XSS
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Published
11 September 2026
Updated
15 October 2026
Weakness
CWE-79

Vendor fix

Update to the latest version with sanitization fixes for CustomizeUser plugin.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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