CVE-2026-52466

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

Open Library Foundation VuFind v11.0.3 and v4.1 is vulnerable to toInorrect Access Control. The application fails to stop processing an incoming request in VuFind\Controller\AbstractBase::validateAccessPermission after it has found that controller level access permissions do not allow access to the requested function. The requester receives a response indicating that access was denied, but the actual function is executed regardless of that.

Published 2026-08-06. Last modified 2026-09-09.