Next.js Security Scanner
Results in 60 Seconds
Paste your deployed Next.js URL. SecuriSky scans your live app for exposed secrets, missing security headers, open API routes, and database misconfigurations — then gives you AI fix prompts for Cursor.
No signup required for your first scan. No source code access needed.
4 Next.js security issues found in most AI-built apps
API Keys in JS Bundles
Next.js client components can accidentally include NEXT_PUBLIC_ variables or server-only secrets in the browser bundle. SecuriSky extracts and scans every JS chunk.
Missing Security Headers
next.config.ts headers() is often skipped. SecuriSky checks for CSP, HSTS, X-Frame-Options, X-Content-Type-Options, and Permissions-Policy.
Open API Routes
Next.js /app/api/ routes without proper auth checks are a common vibe-coding mistake. SecuriSky probes 80+ sensitive paths without authentication.
Supabase / Firebase Exposure
AI-generated Next.js apps frequently misconfigure Supabase RLS or Firebase rules. SecuriSky performs live API probes to confirm data exposure.
How it works
Paste your Next.js URL
Enter your Vercel, Netlify, or custom domain URL. No login required for the first scan.
60-second black-box scan
SecuriSky fetches your JavaScript bundles, checks HTTP headers, probes API routes, and tests database configurations — without touching your code.
Get prioritized findings
Critical issues first. Each finding includes exact evidence, severity, confidence level, and estimated financial impact.
Fix with Cursor in minutes
Every finding has a ready-to-paste Cursor Agent prompt. Most Next.js security fixes take under 15 minutes to apply.
What a scan typically finds in Next.js apps built with AI
- OpenAI API key in a NEXT_PUBLIC_ variable — visible in browser DevTools → Sources
- Missing Content-Security-Policy header in next.config.ts headers()
- CORS wildcard on /api/route.ts with no auth check
- Supabase anon key exposed and RLS disabled on the users table
- /api/debug route returning environment variables without authentication
Common questions
Does this work with Next.js App Router and Pages Router?
Yes. SecuriSky is a black-box scanner that analyzes your deployed site via HTTP — it works regardless of whether you use App Router, Pages Router, or a hybrid setup. It reads your JavaScript bundles and HTTP headers, not your source code.
Will it find secrets in server-side code?
SecuriSky cannot read server-side code directly. However, it scans all client-side JavaScript bundles that Next.js serves to the browser — which is where most accidental secret exposures occur via NEXT_PUBLIC_ variables or improperly guarded imports.
How is this different from running next lint or npm audit?
next lint and npm audit analyze your source code and dependencies. SecuriSky analyzes your LIVE deployed application from the outside — the way an attacker sees it. It catches runtime misconfigurations that static analysis can't find, like a Supabase table with RLS disabled or a live route serving debug information.
My app is deployed on Vercel. Do I need special configuration?
No. Paste your Vercel deployment URL (e.g., myapp.vercel.app or your custom domain). SecuriSky scans the live deployment — no Vercel account access or API keys needed.
What Next.js-specific checks does SecuriSky run?
SecuriSky detects: NEXT_PUBLIC_ secrets in bundles, missing security headers in next.config.ts, exposed /api/ routes, Content-Security-Policy quality, Strict-Transport-Security enforcement, and Supabase/Firebase misconfigurations common in AI-scaffolded Next.js projects.
Free scan. Results in 60 seconds.
No signup. No source code access. No setup. Just your deployed Next.js URL.
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