Dependency Auditor

Dependency Auditor Skill

Automatic dependency vulnerability checking.

When I Activate

• ✅ package.json modified
• ✅ requirements.txt changed
• ✅ Gemfile or pom.xml modified
• ✅ User mentions dependencies or vulnerabilities
• ✅ Before deployments
• ✅ yarn.lock or package-lock.json changes

What I Check

Dependency Vulnerabilities

• Known CVEs in packages
• Outdated dependencies with security fixes
• Malicious packages
• License compatibility issues
• Deprecated packages

Package Managers Supported

• Node.js: npm, yarn, pnpm
• Python: pip, pipenv, poetry
• Ruby: bundler
• Java: Maven, Gradle
• Go: go modules
• PHP: composer

Example Alerts

NPM Vulnerability

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# You run: npm install lodash

# I automatically audit:
🚨 HIGH: Prototype Pollution in lodash
📍 Package: lodash@4.17.15
📦 Vulnerable versions: < 4.17.21
🔧 Fix: npm update lodash
📖 CVE-2020-8203
   https://nvd.nist.gov/vuln/detail/CVE-2020-8203

Recommendation: Update to lodash@4.17.21 or higher

Python Vulnerability

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# You modify requirements.txt: django==2.2.0

# I alert:
🚨 CRITICAL: Multiple vulnerabilities in Django 2.2.0
📍 Package: Django@2.2.0
📦 Vulnerable versions: < 2.2.28
🔧 Fix: Update requirements.txt to Django==2.2.28
📖 CVEs: CVE-2021-33203, CVE-2021-33571

Affected: SQL injection, XSS vulnerabilities
Recommendation: Update immediately to Django@2.2.28+

Multiple Vulnerabilities

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# After npm install:
🚨 Dependency audit found 8 vulnerabilities:
  - 3 CRITICAL
  - 2 HIGH
  - 2 MEDIUM
  - 1 LOW

Critical issues:
  1. axios@0.21.0 - SSRF vulnerability
     Fix: npm install axios@latest

  2. ajv@6.10.0 - Prototype pollution
     Fix: npm install ajv@^8.0.0

  3. node-fetch@2.6.0 - Information disclosure
     Fix: npm install node-fetch@^2.6.7

Run 'npm audit fix' to automatically fix 6/8 issues

Automatic Actions

On Dependency Changes

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1. Detect package manager (npm, pip, etc.)
2. Run security audit command
3. Parse vulnerability results
4. Categorize by severity
5. Suggest fixes
6. Flag breaking changes

Audit Commands

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# Node.js
npm audit
npm audit --json  # Structured output

# Python
pip-audit
safety check

# Ruby
bundle audit

# Java (Maven)
mvn dependency-check:check

Severity Classification

CRITICAL 🚨

• Remote code execution
• SQL injection
• Authentication bypass
• Publicly exploitable

HIGH ⚠️

• Cross-site scripting
• Denial of service
• Information disclosure
• Wide attack surface

MEDIUM 📋

• Limited impact vulnerabilities
• Requires specific conditions
• Difficult to exploit

LOW 💡

• Minor security improvements
• Best practice violations
• Minimal risk

Fix Strategies

Automatic Updates

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# Safe automatic fixes
npm audit fix

# May include breaking changes
npm audit fix --force

Manual Updates

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# Check what will change
npm outdated

# Update specific package
npm update lodash

# Major version update
npm install lodash@latest

Alternative Packages

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Vulnerable: request@2.88.0 (deprecated)
Alternative: axios or node-fetch
Migration guide: [link]

Integration with CI/CD

Block Deployments

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# .github/workflows/security.yml
- name: Dependency audit
  run: |
    npm audit --audit-level=high
    # Fails if HIGH or CRITICAL found

Scheduled Audits

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# Weekly dependency check
on:
  schedule:
    - cron: '0 0 * * 0'
jobs:
  audit:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - run: npm audit

Sandboxing Compatibility

Works without sandboxing: ✅ Yes Works with sandboxing: ⚙️ Needs npm/pip registry access

Sandbox config:

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{
  "network": {
    "allowedDomains": [
      "registry.npmjs.org",
      "pypi.org",
      "rubygems.org",
      "repo.maven.apache.org"
    ]
  }
}

License Checking

I also check license compatibility:

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⚠️ License issue: GPL-3.0 package in commercial project
📦 Package: some-gpl-package@1.0.0
📖 GPL-3.0 requires source code disclosure
🔧 Consider: Find MIT/Apache-2.0 alternative

Best Practices

1. Regular audits: Run weekly or on every dependency change
2. Update frequently: Keep dependencies current
3. Review breaking changes: Test before major updates
4. Pin versions: Use exact versions in production
5. Audit lock files: Commit and audit lock files

Related Tools

• security-auditor skill: Code vulnerability detection
• @architect sub-agent: Dependency strategy
• /review command: Pre-deployment security check