CVE-2026-117617: Jenkins Jenkins vulnerability
Jenkins 2.587 and earlier, LTS 2.580.1 and earlier checks for symbolic links in the path of an extracted file only before creating its parent directories, not immediately before writing it, and allows symbolic links in artifacts to replace existing files or empty directories, allowing attackers with Item/Configure permission to write files to arbitrary locations on the Jenkins controller file system.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
An attacker needs Item/Configure permission in Jenkins. The issue can allow that attacker to write files to arbitrary locations on the Jenkins controller file system through crafted artifacts containing symbolic links.
Which Jenkins versions are affected?
Jenkins 2.587 and earlier are affected, as are Jenkins LTS 2.580.1 and earlier.
What filesystem targets can be altered?
The flaw allows symbolic links in artifacts to replace existing files or empty directories. The write can be directed to arbitrary locations on the Jenkins controller file system.