Vulnerability in Thorsten Phpmyfaq
CVE-2026-45010
phpMyFAQ before 4.1.2 contains an improper restriction of excessive authentication attempts vulnerability in the /admin/check endpoint, which accepts arbitrary user-id parameters without session binding or rate limiting. Unauthenticated attackers can brute-force any user's six-digit TOTP code by submitting POST requests with sequential token values, bypassing two-factor authentication to gain full administrative access.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.006 (45.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.006 · change: +0.002
Affected products
- Thorsten Phpmyfaq — versions 0, 4.1.2
Weakness classification (CWE)
References
- github.com/thorsten/phpMyFAQ/security/advisories/GHSA-9pq7-mfwh-xx2j (vendor-advisory)
- www.vulncheck.com/advisories/phpmyfaq-unauthenticated-two-factor-authentication… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-45010?
- CVE-2026-45010 is a critical-severity vulnerability in Thorsten Phpmyfaq, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 9.1/10. Published 2026-05-15.
- How severe is CVE-2026-45010?
- Critical severity. CVSS v3 base score is 9.1 out of 10.