---
id: CVE-2026-84656
title: >-
  A missing permission check in Jenkins 2.579 and earlier, LTS 2.568.2 and
  earlier allows attackers with Item/Read permission on at least one job to read
  build parameter names and values of jobs they have no access to.
summary: >-
  A missing permission check in Jenkins 2.579 and earlier, LTS 2.568.2 and
  earlier allows attackers with Item/Read permission on at least one job to read
  build parameter names and values of jobs they have no access to.
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-862
vendor: jenkins
product: jenkins
affected:
  - jenkins <= 2.568.2
  - jenkins <= 2.579
published: '2026-09-02'
updated: '2026-09-15'
sourceUpdated: '2026-09-15T18:06:43.853'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-84656'
references:
  - url: 'https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-4006'
    label: jenkinsci-cert@googlegroups.com
tags:
  - nvd
epss: 0.00199
epssPercentile: 0.09966
ingestedAt: '2026-09-15T18:41:59.124Z'
---

## Overview

A missing permission check in Jenkins 2.579 and earlier, LTS 2.568.2 and earlier allows attackers with Item/Read permission on at least one job to read build parameter names and values of jobs they have no access to.

## Affected

- `jenkins <= 2.568.2`
- `jenkins <= 2.579`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.