Vulnerability Description
JS Recon is a JavaScript enumeration and SAST tool. From 1.2.1-beta.1 until 1.3.1-beta.2, the PR Branch Checker workflow in .github/workflows/pr_checker.yml places github.head_ref and github.event.pull_request.head.repo.full_name into BRANCH_NAME and SOURCE_REPO and interpolates those untrusted values into a shell gh pr comment command. A remote user who opens a pull request can use shell metacharacters in a branch or fork name to execute commands in the GitHub Actions runner with the workflow's GITHUB_TOKEN, which has pull-requests write permission. This issue is fixed in version 1.3.1-beta.2.
Related Weaknesses (CWE)
References
- https://github.com/js-recon/js-recon/commit/447876c4bfa9ec5bc98cbc65d7a3e5f88941
- https://github.com/js-recon/js-recon/pull/121
- https://github.com/js-recon/js-recon/releases/tag/v1.3.1-beta.2
- https://github.com/js-recon/js-recon/security/advisories/GHSA-w9cj-mg3x-qjm4
FAQ
What is CVE-2026-55378?
CVE-2026-55378 is a documented vulnerability. JS Recon is a JavaScript enumeration and SAST tool. From 1.2.1-beta.1 until 1.3.1-beta.2, the PR Branch Checker workflow in .github/workflows/pr_checker.yml places github.head_ref and github.event.pul...
How severe is CVE-2026-55378?
CVSS scoring is not yet available for CVE-2026-55378. Check NVD for updates.
Is there a patch for CVE-2026-55378?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.