CyberRota Analysis
AI-GeneratedThe Mstore Api plugin for WordPress is critically vulnerable due to an authentication bypass stemming from missing cryptographic signature verification in its JWT handling. This flaw allows unauthenticated attackers to forge Firebase Phone Auth JWTs, enabling them to impersonate any phone number and gain unauthorized access to existing accounts or create new ones. WordPress site administrators using this plugin should prioritize immediate remediation to protect against potential account takeovers.
Original NVD Description
The Mstore Api plugin for WordPress is vulnerable to Authentication Bypass via JWT Forgery in versions up to, and including, 4.20.0 This is due to missing cryptographic signature verification in the FirebasePhoneAuthHelper::verify_id_token() function, which decodes and validates Firebase ID token claims (alg, kid, aud, iss) but never calls openssl_verify() or any equivalent to validate the JWT signature against Google's actual public key certificates. This makes it possible for unauthenticated attackers to forge a Firebase Phone Auth JWT signed with a self-generated RSA key pair and impersonate any phone number, resulting in unauthorized access to existing WordPress accounts or creation of new arbitrary accounts.