What is CVE-2026-76213?

CVE-2026-76213 is a high-severity vulnerability in Thorsten 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.

Vulnerability in Thorsten 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.

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.

Affected products

Thorsten Phpmyfaq

Weakness classification (CWE)

CWE-307 — Improper Restriction of Excessive Authentication Attempts

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-76213?: CVE-2026-76213 is a high-severity vulnerability in Thorsten 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.