v0.dev Security Scanner
Find security vulnerabilities in your v0.dev generated components and apps. VAS scans for issues specific to Vercel AI-generated applications.
$ vas scan --platform v0
> Common v0.dev Security Issues
v0.dev generates beautiful UI components with AI. When integrated into full applications, these components can introduce security vulnerabilities that need attention.
API Keys in Component Code
When asking v0 to create components that fetch data, API keys sometimes get hardcoded directly into the component source code.
const API_KEY = "sk-..." // Exposed!
Missing Vercel Security Headers
Vercel deployments don't automatically add security headers. Without proper configuration, your v0-generated app lacks CSP, HSTS, and other protections.
"headers": [{ "key": "X-Frame-Options" }]
Unsafe Client-Side Data Handling
AI-generated forms and data components may lack proper input sanitization, creating potential XSS vulnerabilities in your application.
dangerouslySetInnerHTML={{__html: userInput}}
Environment Variable Exposure
Server-side environment variables can leak to the client if not properly prefixed with NEXT_PUBLIC_ or handled correctly.
process.env.DATABASE_URL // Exposed!
> What VAS Checks for v0.dev Apps
Our scanner includes 20+ security checks specifically tuned for v0 and Vercel applications.
> v0.dev Security Checklist
Follow these best practices when deploying v0-generated apps to Vercel.
Add security headers in vercel.json
Configure CSP, HSTS, X-Frame-Options, and X-Content-Type-Options
Use environment variables for API keys
Never hardcode keys in components, use NEXT_PUBLIC_ prefix for client-side only
Enable Vercel Firewall
Use Vercel's built-in firewall for rate limiting and bot protection
Validate all user inputs
Sanitize form inputs and avoid dangerouslySetInnerHTML with user data
Run VAS security scan
Automated scanning catches issues you might miss in code review