Description
phpMyFAQ is an open source FAQ web application. Versions 3.2.0 through 4.1.5 contain an authentication bypass in its public two-factor authentication verification flow: an unauthenticated attacker can submit an account’s numeric user ID and a valid or brute-forced six-digit TOTP code without first authenticating with the account password, allowing takeover of any 2FA-enabled account, including administrator accounts. Version 4.1.6 is patched by binding TOTP verification to a session established after successful password authentication and limiting failed TOTP attempts. No official workaround is documented; affected installations should upgrade to 4.1.6 or later.
References5
- github.com/thorsten/phpMyFAQ/commit/410208b90f1d01534812ac5203d…
- github.com/thorsten/phpMyFAQ/commit/5097dff341fb01e93e8561e7261…
- github.com/thorsten/phpMyFAQ/commit/6a69f6e2142fde722165c65b7e0…
- github.com/thorsten/phpMyFAQ/security/advisories/GHSA-8gpw-xvpf…
- github.com/thorsten/phpMyFAQ/security/advisories/GHSA-8gpw-xvpf…
Metrics
- CVSS 3.1
-
8.1
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 1% percentile: 45 · as of 9 November 2026
- CWE
- CWE-287
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.