What is CVE-2026-89243?

CVE-2026-89243 is a high-severity vulnerability in Wwbn Avideo, classified under Cross-site Scripting. CVSS score: 8.1/10. Published 2026-09-11.

How severe is CVE-2026-89243?

High severity. CVSS v3 base score is 8.1 out of 10.

XSS in Wwbn Avideo

CVE-2026-89243

WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a stored cross-site scripting vulnerability in UserGroups::setGroup_name() that fails to sanitize group_name input. Administrators with canAdminUserGroups permission can inject malicious HTML and JavaScript that executes in the browser when other administrators access the user manager interface.

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N.

Affected products

Wwbn Avideo

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-89243?: CVE-2026-89243 is a high-severity vulnerability in Wwbn Avideo, classified under Cross-site Scripting. CVSS score: 8.1/10. Published 2026-09-11.
How severe is CVE-2026-89243?: High severity. CVSS v3 base score is 8.1 out of 10.