CRITICAL 9.1 NVD
CVE-2026-76214
phpMyFAQ before 4.1.7 (affected versions <= 4.1.5) fails to persist the WebAuthn login challenge generated by prepareForLogin, because neither WebAuthn controll
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.
References
- https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-f534-wv9g-wx2w
- https://www.vulncheck.com/advisories/phpmyfaq-before-webauthn-replay-attack-via-challenge
This critical severity vulnerability with a CVSS score of 9.1 was published on 2026-08-19 via NVD.
Risk Timeline
CVE Disclosed2026-08-19 · 0 days ago
Remediation Resources
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