BIT-JENKINS-2026-53438

A missing permission check in Jenkins 2.567 and earlier, LTS 2.555.2 and earlier allows attackers with Item/Cancel permission, but lacking Item/Read permission, to cancel queue items they do not have permission to view...

Jenkins does not encrypt secrets from POST config.xml submissions before storing them in job configurations

Jenkins 2.567 and earlier, LTS 2.555.2 and earlier does not encrypt secrets from POST config.xml submissions before storing them in job configurations unencrypted in job config.xml files on the Jenkins controller where they can be viewed by users with Item/Extended Read permission, or access to t...

CVE-2026-53437

Jenkins 2.567 and earlier, LTS 2.555.2 and earlier improperly determines that a redirect URL after login is legitimately pointing to Jenkins when it contains tab or newline characters between //, allowing attackers to perform phishing attacks...

CVE-2026-53436

Jenkins 2.567 and earlier, and LTS 2.555.2 and earlier, are affected by a login-redirect validation issue: the system may treat a redirect URL containing relative path segments (./ or ../) as legitimate, which enables phishing attacks by steering users to attacker-controlled destinations after lo...