We actively support the following versions with security updates:

We take security seriously. If you discover a security vulnerability, please follow these steps:

Important: Do not open a public GitHub issue for security vulnerabilities.

Email security details to: [email protected]

Include:

• Description of the vulnerability
• Steps to reproduce
• Potential impact
• Suggested fix (if any)
• Your contact information

For sensitive reports, you may encrypt your message using our PGP key:

-----BEGIN PGP PUBLIC KEY BLOCK-----
[PGP key would be here in production]
-----END PGP PUBLIC KEY BLOCK-----

• Initial Response: Within 48 hours
• Triage: Within 5 business days
• Fix Timeline: Depends on severity
  • Critical: 1-3 days
  • High: 1-2 weeks
  • Medium: 2-4 weeks
  • Low: Next release cycle

• We will work with you to understand and validate the issue
• A fix will be developed and tested
• A security advisory will be published
• Credit will be given to the reporter (unless anonymity is requested)

Smilodon is fully compatible with strict Content Security Policy:

<meta http-equiv="Content-Security-Policy" 
      content="default-src 'self'; 
               script-src 'self'; 
               style-src 'self'; 
               img-src 'self' data:; 
               font-src 'self';">

Features:

• ✅ No eval() or Function() constructors
• ✅ No inline scripts or styles
• ✅ No unsafe dynamic code execution
• ✅ Shadow DOM isolation
• ✅ Nonce support for inline styles (if needed)

Built-in Protections:

1. Default Safe Rendering

   // Safe by default - uses textContent
   option.textContent = userInput;

2. Optional HTML Sanitization

   import { setHTMLSanitizer } from '@smilodon/core';
   import DOMPurify from 'dompurify';
   
   setHTMLSanitizer({
     sanitize: (html) => DOMPurify.sanitize(html)
   });

3. Input Validation

   // All user inputs are validated
   const safeValue = validateInput(userInput);

Security Benefits:

• Styles cannot leak in or out
• DOM structure is encapsulated
• Event handling is isolated
• Reduces attack surface

class EnhancedSelect extends HTMLElement {
  private shadow: ShadowRoot;
  
  constructor() {
    super();
    // Mode 'open' for debugging, 'closed' for production (if needed)
    this.shadow = this.attachShadow({ mode: 'open' });
  }
}

Practices:

• Regular dependency audits with npm audit
• Automated Dependabot updates
• Minimal dependencies (zero runtime dependencies)
• All dev dependencies vetted

Run Security Audit:

# Check for vulnerabilities
npm audit

# Fix automatically (if possible)
npm audit fix

# Force fix (may introduce breaking changes)
npm audit fix --force

All inputs are validated:

interface SelectItem {
  value: string | number;  // Validated type
  label: string;           // Sanitized before rendering
  disabled?: boolean;      // Type-safe boolean
}

function validateItem(item: unknown): SelectItem {
  if (!item || typeof item !== 'object') {
    throw new Error('Invalid item');
  }
  
  const { value, label, disabled } = item as any;
  
  if (value === undefined || value === null) {
    throw new Error('Item value is required');
  }
  
  if (typeof label !== 'string') {
    throw new Error('Item label must be a string');
  }
  
  return {
    value,
    label: sanitizeString(label),
    disabled: Boolean(disabled)
  };
}

Last security audit: 2025-12-10 Next scheduled audit: 2026-01-10

No security vulnerabilities have been reported or discovered to date.

1. Keep Dependencies Updated

   npm update @smilodon/core

2. Use Subresource Integrity (SRI)

   <script 
     src="https://cdn.example.com/smilodon.js"
     integrity="sha384-..." 
     crossorigin="anonymous">
   </script>

3. Enable CSP Headers

   Content-Security-Policy: default-src 'self'; script-src 'self'
   

4. Sanitize User Content

   import DOMPurify from 'dompurify';
   
   const sanitized = DOMPurify.sanitize(userContent);

5. Validate Input Data

   // Always validate items from untrusted sources
   const items = untrustedData.map(validateItem);

1. Never Commit Secrets

   • No API keys, passwords, or tokens in code
   • Use environment variables
   • Add sensitive patterns to .gitignore

2. Review Third-Party Code

   • Audit all new dependencies
   • Check for known vulnerabilities
   • Prefer well-maintained packages

3. Follow Secure Coding Practices

   • Validate all inputs
   • Sanitize all outputs
   • Use parameterized queries (if applicable)
   • Avoid dangerous functions (eval, innerHTML)

4. Test Security

   # Run CSP compliance tests
   npm run test:csp
   
   # Run security audit
   npm audit
   
   # Run all security tests
   npm run test:security

• OWASP Top 10: Protection against common web vulnerabilities
• CWE/SANS Top 25: Mitigation of most dangerous software weaknesses
• CSP Level 3: Full Content Security Policy compliance
• WCAG 2.1 AAA: Accessibility standards (reduces social engineering)

Currently pursuing:

• SOC 2 Type II compliance
• ISO 27001 certification

See SOC2-COMPLIANCE.md for details.

GitHub Security:

• Dependabot alerts enabled
• Secret scanning enabled
• Code scanning (CodeQL) enabled

CI/CD Pipeline:

# .github/workflows/security.yml
name: Security Scan
on: [push, pull_request]

jobs:
  security:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - name: Run npm audit
        run: npm audit --audit-level=moderate
      
      - name: Run Snyk scan
        uses: snyk/actions/node@master
        env:
          SNYK_TOKEN: ${{ secrets.SNYK_TOKEN }}

Recommended Tools:

1. OWASP ZAP - Web application security scanner
2. Burp Suite - Security testing platform
3. npm audit - Dependency vulnerability scanner
4. Snyk - Open source security platform
5. SonarQube - Code quality and security

1. Detection

   • Automated alerts
   • User reports
   • Security researchers

2. Assessment

   • Severity classification
   • Impact analysis
   • Exploit verification

3. Containment

   • Patch development
   • Temporary mitigations
   • Communication plan

4. Resolution

   • Deploy fixes
   • Update documentation
   • Publish security advisory

5. Post-Mortem

   • Root cause analysis
   • Process improvements
   • Prevention measures

• Email: [email protected]
• Response Time: 48 hours
• PGP Key: Available upon request

We recognize security researchers who responsibly disclose vulnerabilities:

No vulnerabilities reported yet

Last Updated: December 10, 2025 Next Review: January 10, 2026