pac4j-jwt versions prior to 4.5.9, 5.7.9, and 6.3.3 contain an authentication bypass vulnerability in JwtAuthenticator when processing encrypted JWTs that allows remote attackers to forge authentication tokens. Attackers who possess the server's RSA public key can create a JWE-wrapped PlainJWT with arbitrary subject and role claims, bypassing signature verification to authenticate as any user including administrators.

pac4j-jwt: JwtAuthenticator Authentication Bypass via JWE-Wrapped PlainJWT

Уязвимость компонента JwtAuthenticator библиотеки аутентификации и авторизации pac4j-jwt, позволяющая нарушителю обойти существующие ограничения безопасности