How to Secure Your v0.dev App
Last updated: January 12, 2026
v0.dev generates UI components, but integrating them into a full application requires security attention. This guide covers securing v0-generated code.
Step-by-Step Security Guide
1. Review Generated Components for XSS
Check that dynamic content is properly escaped. v0 components may use dangerouslySetInnerHTML or unescaped user input.
2. Add Input Validation
v0 focuses on UI, not validation. Add proper input validation for forms and user data before processing.
// Add validation before processing
const sanitizedInput = DOMPurify.sanitize(userInput);3. Secure Data Fetching
Replace placeholder API calls with secure patterns. Use server-side routes for authenticated requests.
4. Configure Security Headers
When deploying v0 components, add security headers to your hosting configuration.
5. Audit Dependencies
v0 may suggest packages. Check each for known vulnerabilities before adding to your project.
6. Scan Deployed Application
After integrating v0 components, run VAS to verify the complete application is secure.
Common Security Mistakes
Avoid these common v0.dev security pitfalls:
Recommended Security Tools
Use these tools to maintain security throughout development:
Ready to Secure Your App?
Security is an ongoing process, not a one-time checklist. After implementing these steps, use VAS to verify your v0.dev app is secure before launch, and consider regular scans as you add new features.
Frequently Asked Questions
Are v0-generated components secure?
v0 focuses on UI/UX, not security. Generated components work correctly but may lack input validation, output encoding, or secure data handling. Review and enhance before production use.
How do I add authentication to v0 components?
v0 doesn't generate authentication. Integrate with auth libraries like NextAuth.js, Clerk, or Supabase Auth. Protect server-side routes and verify authentication in API handlers.