CVE-2026-84651
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.
- Score
- CVSS 3.1 6.3 Medium
- Status
- Analyzed - jenkinsci-cert@googlegroups.com
- Published
- 2026-09-02
- Last modified
- 2026-09-02
- Weaknesses
- CWE-284
Affected products
References
- https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-4025
