CVE-2017-1000354: Jenkins

High severity, CVSS 8.8. EPSS: 1.2% chance of exploitation in the next 30 days.

Jenkins versions 2.56 and earlier as well as 2.46.1 LTS and earlier are vulnerable to a login command which allowed impersonating any Jenkins user. The `login` command available in the remoting-based CLI stored the encrypted user name of the successfully authenticated user in a cache file used to authenticate further commands. Users with sufficient permission to create secrets in Jenkins, and download their encrypted values (e.g. with Job/Configure permission), were able to impersonate any other Jenkins user on the same instance.

Affected products

• Jenkins Jenkins: up to and including 2.56; up to and including 2.46.1

Published 2018-01-29. Last modified 2026-06-17.