What is GHSA-wg26-8wmj-cf9p?

GHSA-wg26-8wmj-cf9p is a security advisory published by GitHub Security Advisories with Medium severity. Jenkins GitHub Branch Source Plugin: Missing permissions check allows attackers to perform a connection test

Which CVE IDs does GHSA-wg26-8wmj-cf9p cover?

GHSA-wg26-8wmj-cf9p covers the following CVE IDs: CVE-2026-42522. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-wg26-8wmj-cf9p?

GHSA-wg26-8wmj-cf9p has a CVSS v3 base score of 4.3, published by GitHub Security Advisories.

Which products are affected by GHSA-wg26-8wmj-cf9p?

GHSA-wg26-8wmj-cf9p affects 1 product, including: maven/org.jenkins-ci.plugins:github-branch-source:\u003c 1967.1969.v205fd594c821.

GHSA-wg26-8wmj-cf9pMediumCVSS 4.3

Jenkins GitHub Branch Source Plugin: Missing permissions check allows attackers to perform a connection test

Vendor

GitHub Security Advisories

Published

April 29, 2026

Last Modified

May 6, 2026

🔗 CVE IDs covered (1)

CVE-2026-42522 →

📋 Description

Jenkins GitHub Branch Source Plugin versions 1967.vdea_d580c1a_b_a_ and earlier do not perform a permission check in a method implementing form validation.

This allows attackers with Overall/Read permission to connect to an attacker-specified URL with attacker-specified GitHub App credentials.

GitHub Branch Source Plugin 1967.1969.v205fd594c821 requires Overall/Manage permission to perform the connection test.

🎯 Affected products1

maven/org.jenkins-ci.plugins:github-branch-source:< 1967.1969.v205fd594c821

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-42522
https://www.jenkins.io/security/advisory/2026-04-29/#SECURITY-3702
https://github.com/advisories/GHSA-wg26-8wmj-cf9p