Vulnerability in Phpmyfaq
CVE-2026-76213
phpMyFAQ before 4.1.7 contains a brute-force vulnerability in the two-factor authentication step where the failure counter is session-scoped and reset on each successful password re-authentication. Attackers with a valid password can bypass the five-attempt limit by obtaining a fresh session cookie and repeatedly re-authenticating to reset the counter, enabling unbounded TOTP code guessing.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (36.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 36.8% 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: 0.004 · change: +0.001
Affected products
Weakness classification (CWE)
References
- github.com/thorsten/phpMyFAQ/security/advisories/GHSA-f98m-hcjv-7rp9 (Exploit, vendor-advisory, Mitigation, Vendor Advisory)
- www.vulncheck.com/advisories/phpmyfaq-before-2fa-brute-force-via-session-scoped… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-76213?
- CVE-2026-76213 is a high-severity vulnerability in Phpmyfaq, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 7.4/10. Published 2026-08-19.
- How severe is CVE-2026-76213?
- High severity. CVSS v3 base score is 7.4 out of 10.