In Connect2id Nimbus JOSE+JWT before 9.37.2, an attacker can cause a denial of service (resource consumption) via a large JWE p2c header value (aka iteration count) for the PasswordBasedDecrypter (PBKDF2) component.

Connect2id Nimbus JOSE+JWT could provide weaker than expected security, caused by proceeding improperly after detection of an invalid HMAC in authenticated AES-CBC decryption. A remote attacker could exploit this vulnerability to conduct a padding oracle attack.

Connect2id Nimbus JOSE+JWT could provide weaker than expected security, caused by the lack of integer-overflow check when converting length values from bytes to bits. A remote attacker could exploit this vulnerability to conduct a HMAC bypass attack.

Connect2id Nimbus JOSE+JWT could provide weaker than expected security, caused by proceeding with ECKey construction without ensuring that the public x and y coordinates are on the specified curve. A remote attacker could exploit this vulnerability to conduct an Invalid Curve Attack.

A flaw was found in Connect2id Nimbus JOSE+JWT prior to version 7.9. While processing JSON web tokens (JWT), nimbus-jose-jwt can throw various uncaught exceptions resulting in an application crash, information disclosure, or authentication bypass. The highest threat from this vulnerability is to data confidentiality and system availability.