4 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
31.0%
Nimbus JOSE+JWT before 4.39 proceeds improperly after detection of an invalid HMAC in authenticated AES-CBC decryption, which allows attackers to conduct a padding oracle attack.
bitbucket.org/connect2id/nimbus-jose-jwt/commits/6a29f10f723f406eb25555f55842c59a43a38912
bitbucket.org/connect2id/nimbus-jose-jwt/issues/223/aescbc-return-immediately-on-invalid-hmac
bitbucket.org/connect2id/nimbus-jose-jwt/src/master/CHANGELOG.txt