CVE-2026-76214
HighCVSS 7.4Summary
phpMyFAQ before 4.1.7 (affected versions <= 4.1.5) fails to persist the WebAuthn login challenge generated by prepareForLogin, because neither WebAuthn controller saves the mutated key objects back to the database. At login the anti-replay comparison is skipped by its own null guard, allowing an attacker who captures a successful WebAuthn assertion to replay it indefinitely and authenticate as the user without any interaction or hardware key.
Risk Assessment
Risk of account takeover without knowledge of the password, potentially leading to unauthorized data access and security breaches.
Recommendation
Update phpMyFAQ to version 4.1.7 or later. Additionally, consider disabling WebAuthn if not essential, and monitor logs for unusual authentications.
Original NVD description (English source)
phpMyFAQ before 4.1.7 (affected versions <= 4.1.5) fails to persist the WebAuthn login challenge generated by prepareForLogin, because neither WebAuthn controller saves the mutated key objects back to the database. At login the anti-replay comparison is skipped by its own null guard, allowing an attacker who captures a successful WebAuthn assertion to replay it indefinitely and authenticate as the user without any interaction or hardware key.