by Kastro
Paper/Archive/CVE-2026-76213

CVE-2026-76213

thorsten phpMyFAQ — phpMyFAQ before 4.1.7 2FA Brute-Force via Session-Scoped Throttle

EPSS 0.4%public exploitCVSS 9.1
critical.is priorityof 100
45
CVSS 9.1 (CNA)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 39.1.391 × 207.8Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
phpMyFAQ< 4.1.74.1.7CNA

Scores by source

VulnCheck (CNA)9.1CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
VulnCheck (CNA)7.4CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

exploitgithub.com/thorsten/phpMyFAQ/security/advisories/GHSA-f98m-hcjv-7rp9writeupvulncheck.com/advisories/phpmyfaq-before-2fa-brute-force-via-session-scoped-throttle