Secure your v0-generated applications with these essential practices. From code review to deployment security.
Verify your app follows these best practices automatically.
v0 generates UI code quickly, but security requires human attention. These practices help you build secure applications with v0-generated components.
v0 generates functional code that may have security oversights. Review before integrating into your app.
Read through generated components, check for XSS vulnerabilities and data handling
v0 generates client components. Add server-side validation for any data these components submit.
Validate all form data server-side before processing or storing
When prompting v0, don't include real API keys or endpoints. Use placeholders.
Use placeholder values in prompts, add real values via environment variables
v0 generates UI, not auth. Use established auth solutions like NextAuth or Clerk.
Don't accept v0-generated auth code, use auth libraries
If v0 components display user content, ensure proper sanitization.
Use React's built-in escaping, avoid dangerouslySetInnerHTML
When deploying v0 code to Vercel, configure environment variables and security headers.
Follow Vercel security best practices for deployment
Generated code may have security oversights
Review all v0 code before using in production
v0 generates client components, but validation must happen server-side
Add server-side validation for all data handling
Exposes internal APIs and makes them harder to change
Use environment variables for API endpoints
Following best practices is the first step. Verify your app is actually secure with a comprehensive security scan.
Scan Your App Freev0 generates functional React code, but security isn't its focus. Review all generated code, add server-side validation, and use established libraries for authentication.
Yes, v0 can generate auth UI (login forms, etc.), but don't use it for auth logic. Use NextAuth, Clerk, or similar libraries for actual authentication.
Export to a proper project, add environment variables for any secrets, implement server-side validation, and follow Vercel security best practices for deployment.
Last updated: January 2026