AIKIDO-2026-861237
jenkins-core is vulnerable to Improper Access Control
43
Medium Risk
This Affects:
jenkins-coreTL;DR
Agent configuration update endpoints accept submitted XML that can name a different existing agent. An attacker with Agent/Configure permission on one agent can overwrite another agent configuration and take over its secret and environment settings. The fix prevents agent configuration updates from overwriting a different existing agent.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and users with Agent/Configure permission can update agent configuration through REST API or CLI.
Background info
jenkins-core is vulnerable to Improper Access Control in versions 0.0.1 - 2.568.2 and 2.569 - 2.579.
How to fix this
Upgrade the org.jenkins-ci.main:jenkins-core library to the patch version.
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