CVE-2026-111911 [CRITICAL] – phpMyFAQ 4.0.0 before 4.1.9 contains an authentication bypass vulnerability where WebAuthn

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.