Next.js security scanner — built for the framework.

What a Next.js security scan checks

• Exposed environment variables leaked in client bundles or source maps
• API route authentication — unauthenticated access to sensitive endpoints
• Server action security — CSRF protection, auth checks, and input validation
• Middleware logic — auth bypasses via path traversal or missing matchers
• HTTP security headers — CSP, HSTS, X-Frame-Options in next.config.js
• Source map exposure — production source maps revealing internal logic
• RSC payload inspection — accidental data exposure in server component responses

Next.js 15 specific risks

Next.js 15 introduces new patterns that create unique security considerations. Vezraa specifically tests for App Router pitfalls that developers miss:

• Partial prerendering (PPR) — cached static shells leaking dynamic user data
• Server Actions exposed without proper authentication checks
• Unstable_cache and data revalidation — stale data access across users
• Middleware rewriting — URL manipulation that bypasses access controls
• Parallel and intercepting routes — unintended route exposure

Why Next.js needs framework-aware scanning

Generic web scanners don't understand Next.js internals. Vezraa is built specifically for the Next.js App Router and knows exactly where to look:

• Generic scanners check /robots.txt — Vezraa checks /api routes against auth middleware
• Generic scanners check HTTP headers — Vezraa checks next.config.js for the source of truth
• Generic scanners miss RSC payloads — Vezraa probes server action endpoints directly

Vezraa is a platform that combines security scanning, autonomous AI pentesting, and production readiness reviews to determine whether software is actually ready for production.

Recommended Next.js security checklist

• Set Strict CSP headers in next.config.js
• Add authentication checks to every API route — not just the page wrapper
• Disable source maps in production builds
• Use server actions with revalidation and CSRF tokens
• Configure middleware with explicit matchers, not catch-all patterns
• Audit all NEXT_PUBLIC_* environment variables in client bundles