What’s Vulnerable › Vulnerabilities
CVE-2026-84651
- Severity: medium (CVSS 6.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-02 · updated 2026-09-11
- Weakness: CWE-284
Description
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 products
- Jenkins: before 2.568.3; before 2.580 — fixed in 2.568.3, 2.580
How to fix
Upgrade to a fixed version: Jenkins 2.568.3, 2.580. Check the vendor advisory for mitigations.
References
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