AIKIDO-2026-753179
jenkins-core is vulnerable to Path Traversal
80
High Risk
This Affects:
jenkins-coreTL;DR
File parameter name checks fail to catch some path traversal patterns. An attacker with Item/Configure and Item/Build permission can write files to arbitrary locations on the controller filesystem, including paths that lead to code execution such as JENKINS_HOME/init.groovy.d/ or JENKINS_HOME/plugins/. The fix improves detection of traversal in file parameter names so those writes are blocked.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and users with Item/Configure and Item/Build permission can submit file parameters.
Background info
jenkins-core is vulnerable to Path Traversal in versions 0.0.1 - 2.568.1 and 2.569 - 2.575.
How to fix this
Upgrade the org.jenkins-ci.main:jenkins-core library to the patch version.
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