CVE-2018-1999001: Jenkins

High severity, CVSS 8.8. EPSS: 18.1% chance of exploitation in the next 30 days.

A unauthorized modification of configuration vulnerability exists in Jenkins 2.132 and earlier, 2.121.1 and earlier in User.java that allows attackers to provide crafted login credentials that cause Jenkins to move the config.xml file from the Jenkins home directory. If Jenkins is started without this file present, it will revert to the legacy defaults of granting administrator access to anonymous users.

Affected products

• Jenkins Jenkins: up to and including 2.121.1; from 2.122, up to and including 2.132
• Oracle Communications Cloud Native Core Automated Test Suite: version 1.9.0 only

Published 2018-07-23. Last modified 2026-06-17.