Auth bypass in Thorsten Phpmyfaq
CVE-2026-45009
phpMyFAQ before 4.1.2 contains an insufficient authorization vulnerability in admin-api routes that allows authenticated ordinary users to access administrative endpoints by only checking login status instead of verifying backend privileges. Attackers with valid frontend user accounts can access sensitive backend operational information including dashboard versions, LDAP configuration, Elasticsearch statistics, and health-check data.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (18.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 18.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Thorsten Phpmyfaq — versions 4.1.1, 4.1.2
Weakness classification (CWE)
References
- github.com/thorsten/phpMyFAQ/security/advisories/GHSA-jrc5-w569-h7h5 (vendor-advisory)
- www.vulncheck.com/advisories/phpmyfaq-insufficient-authorization-check-in-admin… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-45009?
- CVE-2026-45009 is a medium-severity vulnerability in Thorsten Phpmyfaq, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2026-05-15.
- How severe is CVE-2026-45009?
- Medium severity. CVSS v3 base score is 4.3 out of 10.