{"id":"CVE-2026-55378","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-55378","summary":"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…","details":"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.","published":"2026-08-28T20:18:27.200","modified":"2026-08-28T20:18:27.200","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/js-recon/js-recon/commit/447876c4bfa9ec5bc98cbc65d7a3e5f889412491","label":"js-recon/js-recon@447876c"},"references":[{"type":"WEB","url":"https://github.com/js-recon/js-recon/commit/447876c4bfa9ec5bc98cbc65d7a3e5f889412491"},{"type":"WEB","url":"https://github.com/js-recon/js-recon/pull/121"},{"type":"WEB","url":"https://github.com/js-recon/js-recon/releases/tag/v1.3.1-beta.2"},{"type":"WEB","url":"https://github.com/js-recon/js-recon/security/advisories/GHSA-w9cj-mg3x-qjm4"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-28T20:18:27.200"}}