CVE-2019-1003019: Jenkins GitHub OAuth

Medium severity, CVSS 5.9. EPSS: 0.9% chance of exploitation in the next 30 days.

An session fixation vulnerability exists in Jenkins GitHub Authentication Plugin 0.29 and earlier in GithubSecurityRealm.java that allows unauthorized attackers to impersonate another user if they can control the pre-authentication session.

Affected products

• Jenkins GitHub OAuth: up to and including 0.29

Published 2019-02-06. Last modified 2026-06-17.