🚨 phpMyAdmin 5.2.3: WebAuthn 2FA Bypass
A missing cryptographic signature verification step in a fallback authentication implementation could allow attackers to forge WebAuthn assertions and bypass hardware security key verification.
⚠️ The vulnerability is conditional. Deployments missing the required WebAuthn library may be exposed, while standard installations with the dependency loaded use the secure verification path.
Technical analysis and mitigation:
https://thecybersecguru.com/exploits/phpmyadmin-webauthn-2fa-bypass/
Content warning: A technical breakdown of the phpMyAdmin 5.2.3 WebAuthn bypass. See how the CustomServer fallback skips signature verification, who is affected, and how to check and fix your install
The CyberSec GuruphpMyAdmin 5.2.3 WebAuthn 2FA Bypass: How a Missing Signature Check Broke Two-Factor Authentication | The CyberSec GuruA technical breakdown of the phpMyAdmin 5.2.3 WebAuthn bypass. See how the CustomServer fallback skips signature verification, who is affected, and how to check and fix your install