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GHSA-wg26-8wmj-cf9p

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

Source: GitHub Advisory Database (reviewed) Moderate CVE-2026-42522

Packages

EcosystemPackageAffectedFixed in
Maven org.jenkins-ci.plugins:github-branch-source < 1967.1969.v205fd594c821 1967.1969.v205fd594c821

Details

As written in the advisory (Markdown source, shown as plain text).

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.

References

External links from the advisory. They lead to third-party sites.