CVE-2026-111911
phpMyFAQ 4.0.0 before 4.1.9 contains an authentication bypass vulnerability where WebAuthn…
- Risk score
- 71/100
- CVSS
- 9.8 v3.1
- Exploit chance (30 days)
- 0.4%
- Published
- 17 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- phpMyFAQ 4.0.0 before 4.1.9 contains an authentication bypass vulnerability where attackers can register a passkey and log in without a password or TOTP, allowing account takeover.
- Affected
- {'product': 'phpMyFAQ', 'versions': '4.0.0 before 4.1.9'}
- Fix
- Upgrade to version 4.1.9 or later
- Exploitation
- No known exploitation
Why it is Amber
- CVSS 9.8 critical
- Remotely exploitable without logging in
References
- https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-g6cq-6rqg-6c9p
- https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-rg9h-f29v-xhxr
- https://www.vulncheck.com/advisories/phpmyfaq-4.0.0-before-4.1.9-authentication-bypass-via-webauthn-credential-injection
- https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-g6cq-6rqg-6c9p
Original description
phpMyFAQ 4.0.0 before 4.1.9 contains an authentication bypass vulnerability where WebAuthn registration endpoints attach credentials to any account without authentication or challenge validation. Attackers can stage a victim username, submit a forged fmt=none attestation to register a passkey, then log in bypassing passwords and TOTP for account takeover.
Last activity 17 Oct 2026. Patch Forecast updates every hour.