CVE-2026-84651CWE-284broken-access-control

CVE-2026-84651

Medium · published September 2, 2026

CVSS v3.1
6.3
EPSS
0%
Percentile
22.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00308 · 22.4th percentile
Weakness
CWE-284 · Improper Access Control
Published
2026-09-02T20:17Z
Affected products (2)
ProductVersionsFixed in
jenkins/jenkins< 2.568.32.568.3
jenkins/jenkins< 2.5802.580
References (1)
https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-4025 · [email protected]
EPSS history
Timeline
  • 04 SEP 03:44Z
    EPSS moved — → 0%
    epss
  • 02 SEP 15:40Z
    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…
    cvelistv5