CVE-2026-84651
Medium · 6.3CVSS
6.3
EPSS
0.3%
Published
Sep 2, 2026
CISA due date
—
The record
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
| Ecosystem | Package | Introduced | Fixed |
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