{"id":"CVE-2017-12973","aliases":["GHSA-jfmq-4g4m-99rh"],"url":"https://o3.security/vulnerability/CVE-2017-12973","summary":"Nimbus JOSE+JWT vulnerable to padding oracle attack","details":"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.","published":"2017-08-20T16:29:00.283Z","modified":"2026-07-08T12:06:17.918246Z","cvss":{"score":3.1,"severity":"LOW","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"com.nimbusds:nimbus-jose-jwt","fixedVersion":"4.39"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://bitbucket.org/connect2id/nimbus-jose-jwt/issues/223/aescbc-return-immediately-on-invalid-hmac"},{"type":"ADVISORY","url":"https://bitbucket.org/connect2id/nimbus-jose-jwt/src/master/CHANGELOG.txt"},{"type":"FIX","url":"https://bitbucket.org/connect2id/nimbus-jose-jwt/commits/6a29f10f723f406eb25555f55842c59a43a38912"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T12:06:17.918246Z"}}