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Madge vulnerable to command injectionGHSA-753c-phhg-cj29

Fix: pahen/madge@da5cbc9

GHSA-753c-phhg-cj29 is a SQL Injection vulnerability in madge. 1 public exploit reference exists, so weaponization risk is real. A fix is available for madge — see the affected versions and patch details below.

Also known asCVE-2021-23352SNYK-JS-MADGE-1082875
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Oct 11, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
2.1%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs81th percentile — riskier than 81% of all scored CVEsHighest risk
0.13%0.94%1.75%2.56%0.6%2.1%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

265other npm packages depend on this — each one inherits the vulnerability until it's patched upstream
madgenpm
3.0Mdownloads / week

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.

PoC

const madge = require('madge'); 
madge('..', {graphVizPath: "touch HELLO;"}) .then((res) => res.svg()) .then((writtenImagePath) => { console.log('Image written to ' + writtenImagePath); });

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
📦npmmadgeall versions4.0.1npm install madge@4.0.1

Affected Products

1 product · 1 configurations
Application
madgemadge_project
< 4.0.1
range
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for madge, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update madge to 4.0.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-753c-phhg-cj29 is resolved across your whole dependency graph.

  3. Workarounds

    Until you can upgrade, make sure every query built from user input uses parameterised statements or a prepared-statement API rather than string concatenation, and reduce the database account's privileges so an injected query cannot read or alter data beyond what the feature needs.

Frequently Asked Questions

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. ### PoC ```js const madge = require('madge'); madge('..', {graphVizPath: "touch HELLO;"}) .then((res) => res.svg()) .then((writtenImagePath) => { console.log('Image written to ' + writtenImagePath); }); ```
O3 Security · Impact-Aware SCA

Is GHSA-753c-phhg-cj29 in your dependencies?

Find it across npm, including transitive dependencies.

Madge vulnerable to command injection