CVE-2026-55378

CriticalCVSS 9.3

Published: 28/08/2026(UTC)Translated: 29/08/2026(UTC)NVD NIST

Summary

JS Recon from 1.2.1-beta.1 to 1.3.1-beta.2 has a vulnerability in the PR Branch Checker workflow where github.head_ref and github.event.pull_request.head.repo.full_name are interpolated into a shell gh pr comment command. A remote user opening 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.

Risk Assessment

An attacker can execute arbitrary commands in the CI/CD environment, potentially leading to repository integrity compromise, secret theft, or pull request manipulation.

Recommendation

Upgrade JS Recon to version 1.3.1-beta.2 and review GitHub Actions workflows to prevent unsafe interpolations.

Original NVD description (English source)

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.