What is CVE-2026-52466?

CVE-2026-52466 is a critical-severity vulnerability in N/a, classified under Incorrect Authorization. CVSS score: 9.8/10. Published 2026-08-06.

How severe is CVE-2026-52466?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in N/a

CVE-2026-52466

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.

Vulnerability class: Broken Access Control

EPSS: 0.003 (19.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

N/a — versions n/a

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

cve@mitre.org

Frequently asked questions

What is CVE-2026-52466?: CVE-2026-52466 is a critical-severity vulnerability in N/a, classified under Incorrect Authorization. CVSS score: 9.8/10. Published 2026-08-06.
How severe is CVE-2026-52466?: Critical severity. CVSS v3 base score is 9.8 out of 10.