CVE-2026-84651
Published:September 02, 2026
Updated:September 22, 2026
In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, the REST API and CLI endpoints for updating agent configuration do not prevent a submitted configuration from overwriting a different agent by specifying that agent's name in the submitted XML document, allowing attackers with Agent/Configure permission on one agent to take over a different agent, gaining control of its configuration and obtaining access to its inbound agent secret and environment variables.
Affected Packages
https://github.com/jenkinsci/jenkins.git (GITHUB):
Affected version(s) >=jenkins-2.568.1-rc <jenkins-2.568.3Fix Suggestion:
Update to version jenkins-2.568.3https://github.com/jenkinsci/jenkins.git (GITHUB):
Affected version(s) >=jenkins-1.409.1 <jenkins-2.580Fix Suggestion:
Update to version jenkins-2.580org.jenkins-ci.main:jenkins-core (JAVA):
Affected version(s) >=2.568 <2.568.3Fix Suggestion:
Update to version 2.568.3org.jenkins-ci.main:jenkins-core (JAVA):
Affected version(s) >=1.396 <2.580Fix Suggestion:
Update to version 2.580Related Resources (1)
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Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Weakness Type (CWE)
Improper Access Control
EPSS
Base Score:
0.25