Improper Verification of Cryptographic Signature

Overview Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature in the JwtAuthenticator component when handling encrypted JWTs. An attacker can gain unauthorized access by crafting a JWE-wrapped PlainJWT with arbitrary claims if they possess the...

CVE-2026-29000

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 wi...

pac4j-jwt 数据伪造问题漏洞

pac4j-jwt is an JWT authentication module developed by pac4j as open source. Versions of pac4j-jwt prior to 4.5.9, 5.7.9, and 6.3.3 contained a data manipulation vulnerability. This vulnerability stems from the JwtAuthenticator’s inability to properly handle encrypted JWTs, leading to an...