CVE-2017-12973: CONNECT2ID Nimbus Jose+jwt

Low severity, CVSS 3.1. EPSS: 0.6% chance of exploitation in the next 30 days.

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.

Affected products

• CONNECT2ID Nimbus Jose+jwt: version 1.0 only; version 1.1 only; version 1.2 only; version 1.3 only; version 1.4 only; version 1.5 only; …

Published 2017-08-20. Last modified 2026-06-17.