---
id: CVE-2026-57285
aliases:
  - GHSA-g7c6-wxjf-8564
title: >-
  Jenkins GitHub Branch Source Plugin has missing permission check that allows
  enumerating GitHub Enterprise server URLs
summary: >-
  Jenkins GitHub Branch Source Plugin has missing permission check that allows
  enumerating GitHub Enterprise server URLs
severity: medium
cvss: 4.3
cwe:
  - CWE-862
vendor: jenkins-ci
product: 'org.jenkins-ci.plugins:github-branch-source'
ecosystem: maven
affected:
  - 'org.jenkins-ci.plugins:github-branch-source < 1967.1970'
patched:
  - 'org.jenkins-ci.plugins:github-branch-source 1967.1970'
published: '2026-06-24'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T18:10:07Z'
source: GHSA
sourceUrl: 'https://github.com/advisories/GHSA-g7c6-wxjf-8564'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-57285'
  - url: 'https://www.jenkins.io/security/advisory/2026-06-24/#SECURITY-3808'
  - url: >-
      https://github.com/jenkinsci/github-branch-source-plugin/commit/d869797365462234fe061c74fe6bf0bcae8777ea
  - url: >-
      https://github.com/jenkinsci/github-branch-source-plugin/releases/tag/1967.1970.vd86979736546
  - url: 'https://github.com/advisories/GHSA-g7c6-wxjf-8564'
tags:
  - ghsa
  - maven
epss: 0.00281
epssPercentile: 0.18334
ingestedAt: '2026-09-25T18:14:20.392Z'
---

## Overview

Jenkins GitHub Branch Source Plugin 1967.1969.v205fd594c821 and earlier does not perform a permission check in an HTTP endpoint that lists the GitHub API endpoints configured in the global plugin configuration.

This allows attackers with Overall/Read permission to obtain the URLs of GitHub Enterprise servers configured by administrators.

This vulnerability has been reported through the Jenkins Bug Bounty Program sponsored by the European Commission.
GitHub Branch Source Plugin 1967.1970.vd86979736546 requires Overall/Manage permission or Item/Extended Read permission on an item to list the configured GitHub API endpoints.

## Affected packages

- `org.jenkins-ci.plugins:github-branch-source < 1967.1970`

## Remediation

Upgrade to a patched release:

- `org.jenkins-ci.plugins:github-branch-source 1967.1970`