CVE-2018-1000863: Jenkins

High severity, CVSS 8.2. EPSS: 6.8% chance of exploitation in the next 30 days.

A data modification vulnerability exists in Jenkins 2.153 and earlier, LTS 2.138.3 and earlier in User.java, IdStrategy.java that allows attackers to submit crafted user names that can cause an improper migration of user record storage formats, potentially preventing the victim from logging into Jenkins.

Affected products

• Jenkins Jenkins: up to and including 2.138.3; up to and including 2.153
• Red Hat Openshift Container Platform: version 3.11 only

Published 2018-12-10. Last modified 2026-06-17.