Security scanner

Security Scanner for Windsurf Apps

Windsurf builds full-stack apps at speed, but agentic code generation can miss the security glue: auth middleware, input validation, and proper secret handling. VibeScan scans your live Windsurf app and identifies what was left out.

✓ Free · ✓ No login required · ✓ Results in under 60 seconds

89%

of Windsurf apps have at least one critical issue

< 60s

to get your full report

5 checks

run automatically on every scan

Free

no credit card, no account

Common vulnerabilities

The security issues we find in most Windsurf apps

Windsurf accelerates full-stack development with agentic AI. But when AI writes entire features end-to-end, security boundaries between client and server can blur — and critical middleware can be skipped.

Auth middleware missing from generated API routes

Windsurf generates entire feature sets rapidly, which means security middleware that should wrap every route can be omitted. If the AI focused on making the feature work, it may not have added the auth check that ensures only logged-in users can reach it.

Third-party API keys scoped too broadly

When Windsurf integrates third-party services, it often uses the most permissive API key available — the one with the most access — to ensure things work. But a Stripe key with full read-write access or an OpenAI key with no spending limit creates large blast radius if exposed.

Business logic exposed in client-side AI context

Windsurf apps sometimes pass sensitive business logic or system prompts to client-side AI integrations. This logic — including pricing rules, content filters, and internal workflows — can be extracted from the JavaScript bundle by any user.

Missing boundary between server and client code

Agentic code generation can accidentally move server-side logic into client components, exposing database queries, internal API structures, or admin utilities to the browser. Windsurf's speed makes it easy to create these boundaries incorrectly.

Auto-generated routes without input sanitization

Windsurf-generated API handlers often process user input directly without sanitization. This creates risk for SQL injection, command injection, and cross-site scripting — especially in apps that accept rich user content like comments, profiles, or file uploads.

Insufficient logging making breaches hard to detect

Windsurf apps often ship without structured logging on security-sensitive operations: login attempts, data exports, permission changes. Without logs, a breach may go undetected for weeks and you will have no way to understand what data was accessed.

What VibeScan checks

Every scan runs 8 automated checks

VibeScan looks at everything publicly visible in your Windsurf app — the same things an attacker would look at on day one.

✓HTTPS enforcement — detects unencrypted deployment
✓Security headers — X-Frame-Options, CSP, HSTS, X-Content-Type-Options
✓CORS policy — flags wildcard origin configuration
✓Exposed secrets — API keys, JWT tokens, credentials in page source
✓Robots.txt — identifies internal paths exposed to crawlers
✓Bearer token and JWT detection in client JavaScript
✓Supabase and database credential exposure
✓OpenAI and third-party key detection

Scan your Windsurf app now

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FAQ

Common questions about Windsurf security

How do I make sure Windsurf-generated routes have authentication?

After Windsurf generates a new feature, review every API route it created and verify there is an auth check at the top of each handler. Ask Windsurf to add authentication middleware to all routes as a separate step. Never assume the AI added it because the feature works.

Should I use environment variables or a secrets manager for my Windsurf app?

For early-stage apps, environment variables on your hosting platform (Vercel, Railway, Fly.io) are fine. Make sure the variable names do not start with NEXT_PUBLIC_ or any equivalent that ships to the client. For production apps with sensitive data, consider a dedicated secrets manager like Doppler or AWS Secrets Manager.

How do I prevent Windsurf from accidentally moving server code to the client?

In Next.js, add "use server" to files that should only run server-side and "use client" to client components. Review Windsurf's changes for any server-only imports (like database clients or secret environment variables) appearing in client component files.

Is Windsurf's agentic coding more or less secure than coding manually?

Neither is inherently more secure — both approaches produce code with security gaps. The difference is that AI-generated code has more predictable patterns, which makes it easier for attackers to find vulnerabilities at scale. Running VibeScan after each major feature helps catch the most common issues automatically.

What is the first security fix I should make after building with Windsurf?

Run VibeScan first to see what is actually visible. Then: verify all API routes require authentication, ensure all secrets are in environment variables (not in code), and add security headers via vercel.json or your deployment configuration.

Is your Windsurf app secure?

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Security Scanner for Windsurf Apps

The security issues we find in most Windsurf apps

Every scan runs 8 automated checks

Common questions about Windsurf security

Further reading

Is your Windsurf app secure?