Next.js Security Scanner
Free security audit for Next.js apps built with AI coding tools
Is Your Next.js App Secure?
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Why Next.js Apps Need Security Scanning
Next.js is the framework of choice for modern React applications, and AI coding tools generate Next.js code constantly. Whether you're using the App Router or Pages Router, Server Components or Client Components, the complexity of Next.js creates security pitfalls that AI-generated code often misses.
Next.js applications face unique security challenges: middleware misconfigurations, API route exposure, server action vulnerabilities, and client/server boundary confusion. When AI generates your Next.js code, it may not understand these nuances, leaving gaps that attackers can exploit.
Common Next.js Security Issues
- Missing CSRF protection on Server Actions
- Insecure middleware authentication checks
- API routes without proper auth validation
- Environment variables exposed to client
- Missing security headers in next.config.js
- Insecure revalidation tokens
- Server-side request forgery (SSRF) in API routes
- Client components with sensitive logic
Why Vibe-Coded Next.js Apps Are Vulnerable
Next.js's power comes from its flexibility - server rendering, API routes, middleware, and server actions all in one framework. But this flexibility creates security complexity. AI tools generate code that works without understanding the security implications of where code runs. A check that works in middleware might be bypassed entirely, and server actions might lack CSRF protection because the AI assumes Next.js handles it automatically.
What VibeCheck Scans For
- Server Action CSRF protection and validation
- Middleware authentication and authorization
- API route security and input validation
- Environment variable exposure to client
- Security headers configuration
- ISR revalidation security
- SSRF vulnerabilities in data fetching
- Client/server boundary security
The Stats Behind Vibe Coding Security
of AI-generated code contains security vulnerabilities (Kaspersky)
of Lovable apps have critical RLS flaws exposing user data
How to Secure Your Next.js App
VibeCheck gives you a comprehensive security report in seconds. Paste your GitHub repository URL or live site URL, and our scanner analyzes your code for vulnerabilities specific to Next.js applications.
Each finding includes a plain-English explanation of the vulnerability, the specific file and line where it was found, and a copy-paste prompt you can give to your AI coding tool to fix the issue. No security expertise required.
Scan Your Other Apps
VibeCheck supports security scanning for all major vibe coding platforms: