CVE-2019-1003009: Jenkins Active Directory

High severity, CVSS 7.4. EPSS: 0.8% chance of exploitation in the next 30 days.

An improper certificate validation vulnerability exists in Jenkins Active Directory Plugin 2.10 and earlier in src/main/java/hudson/plugins/active_directory/ActiveDirectoryDomain.java, src/main/java/hudson/plugins/active_directory/ActiveDirectorySecurityRealm.java, src/main/java/hudson/plugins/active_directory/ActiveDirectoryUnixAuthenticationProvider.java that allows attackers to impersonate the Active Directory server Jenkins connects to for authentication if Jenkins is configured to use StartTLS.

Affected products

• Jenkins Active Directory: up to and including 2.10

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