VulnerabilityDeferred

CVE-2026-52466

Open Library Foundation VuFind v11.0.3 and v4.1 is vulnerable to toInorrect Access Control.

CRITICAL 9.8EPSS 0.27%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.27%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

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.

CVSS 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.27% probability · 19th percentile
CISA KEV: Not listed
Weakness: CWE-863
Source: cve@mitre.org

References

https://vufind.org/wiki/security:cve-2026-52466

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.