Bug 2527582 (CVE-2026-84651) - CVE-2026-84651 jenkins: Jenkins: Privilege escalation via agent configuration overwrite
Summary: CVE-2026-84651 jenkins: Jenkins: Privilege escalation via agent configuration...
Keywords:
Status: NEW
Alias: CVE-2026-84651
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-02 15:58 UTC by OSIDB Bzimport
Modified: 2026-09-28 05:55 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-09-02 15:58:50 UTC 
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.
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