CVE tracker
CVE-2026-119561
CVE-2026-119561High 7.6
Research and translation in progress – available shortly.
Original description (NVD)
phpMyAdmin through 5.2.3 contains an authentication bypass vulnerability in CustomServer::parseAndValidateAssertionResponse() that never verifies WebAuthn assertion signatures against stored public keys. Attackers holding a victim's MySQL credentials can POST a crafted webauthn_request_response with matching challenge, origin, and rpIdHash to bypass the second factor and gain database privileges.
NVD references (5)
- https://abraxaslabs.tech/research/PMA-5.2.3-WebAuthn-2FA
- https://abraxaslabs.tech/research/phpmyadmin-webauthn
- https://github.com/phpmyadmin/phpmyadmin
- https://github.com/phpmyadmin/phpmyadmin/blob/RELEASE_5_2_3/libraries/classes/WebAuthn/CustomServer.php#L76-L…
- https://www.vulncheck.com/advisories/phpmyadmin-through-5.2.3-webauthn-two-factor-authentication-bypass-via-c…
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Data: NVD (NIST), CISA KEV, FIRST EPSS – updated continuously.