Security Scanning Security Dependencies

Dependency Vulnerability Scanning

You are a security expert specializing in dependency vulnerability analysis, SBOM generation, and supply chain security. Scan project dependencies across multiple ecosystems to identify vulnerabilities, assess risks, and provide automated remediation strategies.

Use this skill when

• Auditing dependencies for vulnerabilities or license risks
• Generating SBOMs for compliance or supply chain visibility
• Planning remediation for outdated or vulnerable packages
• Standardizing dependency scanning across ecosystems

Do not use this skill when

• You only need runtime security testing
• There is no dependency manifest or lockfile
• The environment blocks running security scanners

Context

The user needs comprehensive dependency security analysis to identify vulnerable packages, outdated dependencies, and license compliance issues. Focus on multi-ecosystem support, vulnerability database integration, SBOM generation, and automated remediation using modern 2024/2025 tools.

Requirements

$ARGUMENTS

Instructions

• Clarify goals, constraints, and required inputs.
• Apply relevant best practices and validate outcomes.
• Provide actionable steps and verification.
• If detailed examples are required, open resources/implementation-playbook.md.

Safety

• Avoid running auto-fix or upgrade steps without approval.
• Treat dependency changes as release-impacting and test accordingly.

Resources

• resources/implementation-playbook.md for detailed patterns and examples.

Dependency Vulnerability Scanning Implementation Playbook

This file contains detailed patterns, checklists, and code samples referenced by the skill.

Dependency Vulnerability Scanning

You are a security expert specializing in dependency vulnerability analysis, SBOM generation, and supply chain security. Scan project dependencies across multiple ecosystems to identify vulnerabilities, assess risks, and provide automated remediation strategies.

Use this skill when

• Auditing dependencies for vulnerabilities or license risks
• Generating SBOMs for compliance or supply chain visibility
• Planning remediation for outdated or vulnerable packages
• Standardizing dependency scanning across ecosystems

Do not use this skill when

• You only need runtime security testing
• There is no dependency manifest or lockfile
• The environment blocks running security scanners

Safety

• Avoid running auto-fix or upgrade steps without approval.
• Treat dependency changes as release-impacting and test accordingly.

Context

The user needs comprehensive dependency security analysis to identify vulnerable packages, outdated dependencies, and license compliance issues. Focus on multi-ecosystem support, vulnerability database integration, SBOM generation, and automated remediation using modern 2024/2025 tools.

Requirements

$ARGUMENTS

Instructions

1. Multi-Ecosystem Dependency Scanner

import subprocess
import json
import requests
from pathlib import Path
from typing import Dict, List, Any
from dataclasses import dataclass
from datetime import datetime

@dataclass
class Vulnerability:
    package: str
    version: str
    vulnerability_id: str
    severity: str
    cve: List[str]
    cvss_score: float
    fixed_versions: List[str]
    source: str

class DependencyScanner:
    def __init__(self, project_path: str):
        self.project_path = Path(project_path)
        self.ecosystem_scanners = {
            'npm': self.scan_npm,
            'pip': self.scan_python,
            'go': self.scan_go,
            'cargo': self.scan_rust
        }

    def detect_ecosystems(self) -> List[str]:
        ecosystem_files = {
            'npm': ['package.json', 'package-lock.json'],
            'pip': ['requirements.txt', 'pyproject.toml'],
            'go': ['go.mod'],
            'cargo': ['Cargo.toml']
        }

        detected = []
        for ecosystem, patterns in ecosystem_files.items():
            if any(list(self.project_path.glob(f"**/{p}")) for p in patterns):
                detected.append(ecosystem)
        return detected

    def scan_all_dependencies(self) -> Dict[str, Any]:
        ecosystems = self.detect_ecosystems()
        results = {
            'timestamp': datetime.now().isoformat(),
            'ecosystems': {},
            'vulnerabilities': [],
            'summary': {
                'total_vulnerabilities': 0,
                'critical': 0,
                'high': 0,
                'medium': 0,
                'low': 0
            }
        }

        for ecosystem in ecosystems:
            scanner = self.ecosystem_scanners.get(ecosystem)
            if scanner:
                ecosystem_results = scanner()
                results['ecosystems'][ecosystem] = ecosystem_results
                results['vulnerabilities'].extend(ecosystem_results.get('vulnerabilities', []))

        self._update_summary(results)
        results['remediation_plan'] = self.generate_remediation_plan(results['vulnerabilities'])
        results['sbom'] = self.generate_sbom(results['ecosystems'])

        return results

    def scan_npm(self) -> Dict[str, Any]:
        results = {
            'ecosystem': 'npm',
            'vulnerabilities': []
        }

        try:
            npm_result = subprocess.run(
                ['npm', 'audit', '--json'],
                cwd=self.project_path,
                capture_output=True,
                text=True,
                timeout=120
            )

            if npm_result.stdout:
                audit_data = json.loads(npm_result.stdout)
                for vuln_id, vuln in audit_data.get('vulnerabilities', {}).items():
                    results['vulnerabilities'].append({
                        'package': vuln.get('name', vuln_id),
                        'version': vuln.get('range', ''),
                        'vulnerability_id': vuln_id,
                        'severity': vuln.get('severity', 'UNKNOWN').upper(),
                        'cve': vuln.get('cves', []),
                        'fixed_in': vuln.get('fixAvailable', {}).get('version', 'N/A'),
                        'source': 'npm_audit'
                    })
        except Exception as e:
            results['error'] = str(e)

        return results

    def scan_python(self) -> Dict[str, Any]:
        results = {
            'ecosystem': 'python',
            'vulnerabilities': []
        }

        try:
            safety_result = subprocess.run(
                ['safety', 'check', '--json'],
                cwd=self.project_path,
                capture_output=True,
                text=True,
                timeout=120
            )

            if safety_result.stdout:
                safety_data = json.loads(safety_result.stdout)
                for vuln in safety_data:
                    results['vulnerabilities'].append({
                        'package': vuln.get('package_name', ''),
                        'version': vuln.get('analyzed_version', ''),
                        'vulnerability_id': vuln.get('vulnerability_id', ''),
                        'severity': 'HIGH',
                        'fixed_in': vuln.get('fixed_version', ''),
                        'source': 'safety'
                    })
        except Exception as e:
            results['error'] = str(e)

        return results

    def scan_go(self) -> Dict[str, Any]:
        results = {
            'ecosystem': 'go',
            'vulnerabilities': []
        }

        try:
            govuln_result = subprocess.run(
                ['govulncheck', '-json', './...'],
                cwd=self.project_path,
                capture_output=True,
                text=True,
                timeout=180
            )

            if govuln_result.stdout:
                for line in govuln_result.stdout.strip().split('\n'):
                    if line:
                        vuln_data = json.loads(line)
                        if vuln_data.get('finding'):
                            finding = vuln_data['finding']
                            results['vulnerabilities'].append({
                                'package': finding.get('osv', ''),
                                'vulnerability_id': finding.get('osv', ''),
                                'severity': 'HIGH',
                                'source': 'govulncheck'
                            })
        except Exception as e:
            results['error'] = str(e)

        return results

    def scan_rust(self) -> Dict[str, Any]:
        results = {
            'ecosystem': 'rust',
            'vulnerabilities': []
        }

        try:
            audit_result = subprocess.run(
                ['cargo', 'audit', '--json'],
                cwd=self.project_path,
                capture_output=True,
                text=True,
                timeout=120
            )

            if audit_result.stdout:
                audit_data = json.loads(audit_result.stdout)
                for vuln in audit_data.get('vulnerabilities', {}).get('list', []):
                    advisory = vuln.get('advisory', {})
                    results['vulnerabilities'].append({
                        'package': vuln.get('package', {}).get('name', ''),
                        'version': vuln.get('package', {}).get('version', ''),
                        'vulnerability_id': advisory.get('id', ''),
                        'severity': 'HIGH',
                        'source': 'cargo_audit'
                    })
        except Exception as e:
            results['error'] = str(e)

        return results

    def _update_summary(self, results: Dict[str, Any]):
        vulnerabilities = results['vulnerabilities']
        results['summary']['total_vulnerabilities'] = len(vulnerabilities)

        for vuln in vulnerabilities:
            severity = vuln.get('severity', '').upper()
            if severity == 'CRITICAL':
                results['summary']['critical'] += 1
            elif severity == 'HIGH':
                results['summary']['high'] += 1
            elif severity == 'MEDIUM':
                results['summary']['medium'] += 1
            elif severity == 'LOW':
                results['summary']['low'] += 1

    def generate_remediation_plan(self, vulnerabilities: List[Dict]) -> Dict[str, Any]:
        plan = {
            'immediate_actions': [],
            'short_term': [],
            'automation_scripts': {}
        }

        critical_high = [v for v in vulnerabilities if v.get('severity', '').upper() in ['CRITICAL', 'HIGH']]

        for vuln in critical_high[:20]:
            plan['immediate_actions'].append({
                'package': vuln.get('package', ''),
                'current_version': vuln.get('version', ''),
                'fixed_version': vuln.get('fixed_in', 'latest'),
                'severity': vuln.get('severity', ''),
                'priority': 1
            })

        plan['automation_scripts'] = {
            'npm_fix': 'npm audit fix && npm update',
            'pip_fix': 'pip-audit --fix && safety check',
            'go_fix': 'go get -u ./... && go mod tidy',
            'cargo_fix': 'cargo update && cargo audit'
        }

        return plan

    def generate_sbom(self, ecosystems: Dict[str, Any]) -> Dict[str, Any]:
        sbom = {
            'bomFormat': 'CycloneDX',
            'specVersion': '1.5',
            'version': 1,
            'metadata': {
                'timestamp': datetime.now().isoformat()
            },
            'components': []
        }

        for ecosystem_name, ecosystem_data in ecosystems.items():
            for vuln in ecosystem_data.get('vulnerabilities', []):
                sbom['components'].append({
                    'type': 'library',
                    'name': vuln.get('package', ''),
                    'version': vuln.get('version', ''),
                    'purl': f"pkg:{ecosystem_name}/{vuln.get('package', '')}@{vuln.get('version', '')}"
                })

        return sbom

2. Vulnerability Prioritization

class VulnerabilityPrioritizer:
    def calculate_priority_score(self, vulnerability: Dict) -> float:
        cvss_score = vulnerability.get('cvss_score', 0) or 0
        exploitability = 1.0 if vulnerability.get('exploit_available') else 0.5
        fix_available = 1.0 if vulnerability.get('fixed_in') else 0.3

        priority_score = (
            cvss_score * 0.4 +
            exploitability * 2.0 +
            fix_available * 1.0
        )

        return round(priority_score, 2)

    def prioritize_vulnerabilities(self, vulnerabilities: List[Dict]) -> List[Dict]:
        for vuln in vulnerabilities:
            vuln['priority_score'] = self.calculate_priority_score(vuln)

        return sorted(vulnerabilities, key=lambda x: x['priority_score'], reverse=True)

3. CI/CD Integration

name: Dependency Security Scan

on:
  push:
    branches: [main]
  schedule:
    - cron: '0 2 * * *'

jobs:
  scan-dependencies:
    runs-on: ubuntu-latest

    strategy:
      matrix:
        ecosystem: [npm, python, go]

    steps:
      - uses: actions/checkout@v4

      - name: NPM Audit
        if: matrix.ecosystem == 'npm'
        run: |
          npm ci
          npm audit --json > npm-audit.json || true
          npm audit --audit-level=moderate

      - name: Python Safety
        if: matrix.ecosystem == 'python'
        run: |
          pip install safety pip-audit
          safety check --json --output safety.json || true
          pip-audit --format=json --output=pip-audit.json || true

      - name: Go Vulnerability Check
        if: matrix.ecosystem == 'go'
        run: |
          go install golang.org/x/vuln/cmd/govulncheck@latest
          govulncheck -json ./... > govulncheck.json || true

      - name: Upload Results
        uses: actions/upload-artifact@v4
        with:
          name: scan-${{ matrix.ecosystem }}
          path: '*.json'

      - name: Check Thresholds
        run: |
          CRITICAL=$(grep -o '"severity":"CRITICAL"' *.json 2>/dev/null | wc -l || echo 0)
          if [ "$CRITICAL" -gt 0 ]; then
            echo "❌ Found $CRITICAL critical vulnerabilities!"
            exit 1
          fi

4. Automated Updates

#!/bin/bash
# automated-dependency-update.sh

set -euo pipefail

ECOSYSTEM="$1"
UPDATE_TYPE="${2:-patch}"

update_npm() {
    npm audit --audit-level=moderate || true

    if [ "$UPDATE_TYPE" = "patch" ]; then
        npm update --save
    elif [ "$UPDATE_TYPE" = "minor" ]; then
        npx npm-check-updates -u --target minor
        npm install
    fi

    npm test
    npm audit --audit-level=moderate
}

update_python() {
    pip install --upgrade pip
    pip-audit --fix
    safety check
    pytest
}

update_go() {
    go get -u ./...
    go mod tidy
    govulncheck ./...
    go test ./...
}

case "$ECOSYSTEM" in
    npm) update_npm ;;
    python) update_python ;;
    go) update_go ;;
    *)
        echo "Unknown ecosystem: $ECOSYSTEM"
        exit 1
        ;;
esac

5. Reporting

class VulnerabilityReporter:
    def generate_markdown_report(self, scan_results: Dict[str, Any]) -> str:
        report = f"""# Dependency Vulnerability Report

**Generated:** {datetime.now().strftime('%Y-%m-%d %H:%M:%S')}

## Executive Summary

- **Total Vulnerabilities:** {scan_results['summary']['total_vulnerabilities']}
- **Critical:** {scan_results['summary']['critical']} 🔴
- **High:** {scan_results['summary']['high']} 🟠
- **Medium:** {scan_results['summary']['medium']} 🟡
- **Low:** {scan_results['summary']['low']} 🟢

## Critical & High Severity

"""

        critical_high = [v for v in scan_results['vulnerabilities']
                        if v.get('severity', '').upper() in ['CRITICAL', 'HIGH']]

        for vuln in critical_high[:20]:
            report += f"""
### {vuln.get('package', 'Unknown')} - {vuln.get('vulnerability_id', '')}

- **Severity:** {vuln.get('severity', 'UNKNOWN')}
- **Current Version:** {vuln.get('version', '')}
- **Fixed In:** {vuln.get('fixed_in', 'N/A')}
- **CVE:** {', '.join(vuln.get('cve', []))}

"""

        return report

    def generate_sarif(self, scan_results: Dict[str, Any]) -> Dict[str, Any]:
        return {
            "version": "2.1.0",
            "$schema": "https://raw.githubusercontent.com/oasis-tcs/sarif-spec/master/Schemata/sarif-schema-2.1.0.json",
            "runs": [{
                "tool": {
                    "driver": {
                        "name": "Dependency Scanner",
                        "version": "1.0.0"
                    }
                },
                "results": [
                    {
                        "ruleId": vuln.get('vulnerability_id', 'unknown'),
                        "level": self._map_severity(vuln.get('severity', '')),
                        "message": {
                            "text": f"{vuln.get('package', '')} has known vulnerability"
                        }
                    }
                    for vuln in scan_results['vulnerabilities']
                ]
            }]
        }

    def _map_severity(self, severity: str) -> str:
        mapping = {
            'CRITICAL': 'error',
            'HIGH': 'error',
            'MEDIUM': 'warning',
            'LOW': 'note'
        }
        return mapping.get(severity.upper(), 'warning')

Best Practices

1. Regular Scanning: Run dependency scans daily via scheduled CI/CD 2. Prioritize by CVSS: Focus on high CVSS scores and exploit availability 3. Staged Updates: Auto-update patch versions, manual for major versions 4. Test Coverage: Always run full test suite after updates 5. SBOM Generation: Maintain up-to-date Software Bill of Materials 6. License Compliance: Check for restrictive licenses 7. Rollback Strategy: Create backup branches before major updates

Tool Installation

# Python
pip install safety pip-audit pipenv pip-licenses

# JavaScript
npm install -g snyk npm-check-updates

# Go
go install golang.org/x/vuln/cmd/govulncheck@latest

# Rust
cargo install cargo-audit

Usage Examples

# Scan all dependencies
python dependency_scanner.py scan --path .

# Generate SBOM
python dependency_scanner.py sbom --format cyclonedx

# Auto-fix vulnerabilities
./automated-dependency-update.sh npm patch

# CI/CD integration
python dependency_scanner.py scan --fail-on critical,high

Focus on automated vulnerability detection, risk assessment, and remediation across all major package ecosystems.