Vulnerabilities in pkg:maven/org.jenkins-ci.plugins/github-branch-source

PACKAGE
Advisory Identifier: GHSA-g7c6-wxjf-8564
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Advisory Summary

CVE-2026-57285 is a MODERATE (CVSS 4.3) remote code execution vulnerability (CWE-862: Missing Authorization) affecting Github branch source libraries in the Maven ecosystem. The issue involves jenkins github branch source plugin has missing permission check that allows enumerating github enterprise server urls. Remediation is available by upgrading affected packages to version 1967.1970.

5 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:maven/org.jenkins-ci.plugins/github-branch-source

5 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:maven/org.jenkins-ci.plugins/github-branch-source. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-g7c6-wxjf-8564 CVE-2026-57285 MODERATE Jenkins GitHub Branch Source Plugin has missing permission check that allows enumerating GitHub Enterprise server URLs
GHSA-wg26-8wmj-cf9p CVE-2026-42522 MODERATE Jenkins GitHub Branch Source Plugin: Missing permissions check allows attackers to perform a connection test
GHSA-w66r-f5gg-gqwm CVE-2017-1000091 MODERATE Jenkins GitHub Branch Source Plugin vulnerable to Cross-Site Request Forgery
GHSA-6jp2-hggx-8j7p CVE-2017-1000087 MODERATE Jenkins GitHub Branch Source Plugin allows any user with Overall/Read permission to get list of valid credentials IDs
GHSA-9cfq-v2hm-c3xr CVE-2018-1000185 MODERATE Jenkins GitHub Branch Source Plugin vulnerable to Server-Side Request Forgery

CVE-2026-57285 at a Glance

CVE Identifier CVE-2026-57285
GHSA Identifier GHSA-g7c6-wxjf-8564
Severity MODERATE
CVSS v3.1 Base Score 4.3
CWE Classification CWE-862: Missing Authorization
Affected Product Github branch source
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 4.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2026-57285

To remediate this vulnerability, upgrade all affected Github branch source dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.jenkins-ci.plugins:github-branch-source fixed: 1967.1970 
<dependency>
    <groupId>org.jenkins-ci.plugins</groupId>
    <artifactId>github-branch-source</artifactId>
    <version>1967.1970</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=org.jenkins-ci.plugins

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-57285, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.jenkins-ci.plugins

Analyze the terminal output to locate any version of Github branch source in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1967.1970), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.jenkins-ci.plugins command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-862: Missing Authorization, where the product does not perform an authorization check when an actor attempts to access a resource or perform an action. In Github branch source, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2026-57285 Affected Github branch source Versions

1 component(s)
Fixed Versions:
1967.1970
Product / Package Ecosystem Affected Versions Fixed Version
org.jenkins-ci.plugins:github-branch-source
maven/org.jenkins-ci.plugins/github-branch-source
Maven
< 1967.1970
1967.1970

References

NVD — CVE-2026-57285 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-57285
Security Fix Commit FIX COMMIT
https://github.com/jenkinsci/github-branch-source-plugin/commit/d869797365462234fe061c74fe6bf0bcae8777ea
Github branch source Source Repository REPOSITORY
https://github.com/jenkinsci/github-branch-source-plugin
Github branch source Release RELEASE
https://github.com/jenkinsci/github-branch-source-plugin/releases/tag/1967.1970.vd86979736546
Github branch source Security Information SECURITY
https://www.jenkins.io/security/advisory/2026-06-24/#SECURITY-3808

Frequently Asked Questions

What is CVE-2026-57285?
CVE-2026-57285 is a security vulnerability in Github branch source involving Jenkins GitHub Branch Source Plugin has missing permission check that allows enumerating GitHub Enterprise server URLs under CWE-862: Missing Authorization.
Which Github branch source versions are affected?
Affected versions include releases prior to 1967.1970 across affected packages: org.jenkins-ci.plugins:github-branch-source.
What version fixes CVE-2026-57285?
Upgrading to 1967.1970 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github-branch-source affected?
Yes, org.jenkins-ci.plugins:github-branch-source is affected in releases prior to 1967.1970. Upgrade your dependency to 1967.1970 or later.
What is the CVSS score of CVE-2026-57285?
CVE-2026-57285 has a CVSS v3.1 base score of 4.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2026-57285?
CVE-2026-57285 is classified under CWE-862: Missing Authorization (The product does not perform an authorization check when an actor attempts to access a resource or perform an action.).
How can I check Maven dependencies for CVE-2026-57285?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.jenkins-ci.plugins'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-g7c6-wxjf-8564",
  "modified" : "2026-09-25T18:10:06Z",
  "published" : "2026-06-24T15:31:47Z",
  "aliases" : [ "CVE-2026-57285" ],
  "summary" : "Jenkins GitHub Branch Source Plugin has missing permission check that allows enumerating GitHub Enterprise server URLs",
  "details" : "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.\n\nThis allows attackers with Overall/Read permission to obtain the URLs of GitHub Enterprise servers configured by administrators.\n\nThis vulnerability has been reported through the Jenkins Bug Bounty Program sponsored by the European Commission.\nGitHub 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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.plugins:github-branch-source"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1967.1970"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-57285"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/github-branch-source-plugin/commit/d869797365462234fe061c74fe6bf0bcae8777ea"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/github-branch-source-plugin"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/github-branch-source-plugin/releases/tag/1967.1970.vd86979736546"
  }, {
    "type" : "WEB",
    "url" : "https://www.jenkins.io/security/advisory/2026-06-24/#SECURITY-3808"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-862" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-09-25T18:10:06Z",
    "nvd_published_at" : "2026-06-24T14:17:34Z"
  }
}