---
id: CVE-2026-84651
title: >-
  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 sub…
summary: >-
  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 sub…
severity: medium
cvss: 6.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-284
vendor: jenkins
product: jenkins
affected:
  - jenkins < 2.568.3
  - jenkins < 2.580
patched:
  - jenkins 2.580
published: '2026-09-02'
updated: '2026-09-11'
sourceUpdated: '2026-09-11T21:16:20.667'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-84651'
references:
  - url: 'https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-4025'
    label: jenkinsci-cert@googlegroups.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-02T17:23:44.231193Z'
ingestedAt: '2026-09-14T04:28:14.931Z'
epss: 0.00308
epssPercentile: 0.20976
---

## Overview

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

- `jenkins < 2.568.3`
- `jenkins < 2.580`

## Remediation

Upgrade past the affected range:

- `jenkins 2.580`