Windsurf Generated API Routes Without Auth Middleware
Windsurf's Cascade generated API routes and server endpoints that process requests without verifying the user is authenticated or authorized. Anyone who knows the URL can access, modify, or delete data without logging in.
This happens frequently when Cascade creates new CRUD endpoints, admin routes, or data export functionality. The generated handlers focus on the business logic but skip the authentication and authorization layer entirely. Your app may have a login page, but the API behind it is wide open.
You might discover this when testing your API directly with curl or Postman and realizing it returns data without any authentication header, or when a user accesses another user's data by changing an ID in the URL.
Error Messages You Might See
Common Causes
- No middleware applied to new routes — Cascade generated route handlers but didn't wrap them with your existing auth middleware
- Auth check missing on individual endpoints — Some routes have auth, others don't, because they were generated in separate Cascade sessions
- No authorization checks — Routes verify the user is logged in but don't check if they have permission to access the specific resource
- Public endpoints exposing private data — API routes intended for internal use are accessible without authentication
- Missing user scoping on queries — Database queries return all records instead of filtering by the authenticated user's ID
How to Fix It
- Audit all your routes — List every API endpoint in your app and mark which ones require authentication. Any endpoint that reads or writes user data must be protected
- Apply auth middleware globally — Set up authentication middleware at the router level so all routes are protected by default, then explicitly mark public routes
- Add authorization checks — After verifying identity, check that the user has permission to access the specific resource (e.g., only the owner can edit their profile)
- Scope all database queries — Always filter queries by the authenticated user's ID: WHERE user_id = $currentUser instead of returning all rows
- Test with unauthenticated requests — Use curl or Postman to hit every endpoint without an auth token and verify you get 401 responses
- Enable Supabase RLS if applicable — Turn on Row Level Security and create policies that restrict data access at the database level
Real developers can help you.
Rudra Bhikadiya
I build and fix web apps across Next.js, Node.js, and DBs.
Comfortable jumping into messy code, broken APIs, and mysterious bugs.
If your project works in theory but not in reality, I help close that gap.
Taufan
I’m a product-focused engineer and tech leader who builds scalable systems and turns ideas into production-ready platforms.
Over the past years, I’ve worked across startups and fast-moving teams, leading backend architecture, improving system reliability, and shipping products used by thousands of users. My strength is not just writing code — but connecting product vision, technical execution, and business impact.
Jared Hasson
Full time lead founding dev at a cyber security saas startup, with 10 yoe and a bachelor's in CS. Building & debugging software products is what I've spent my time on for forever
Yovel Cohen
I got a lot of experience in building Long-horizon AI Agents in production, Backend apps that scale to millions of users and frontend knowledge as well.
Nam Tran
10 years as fullstack developer
Pratik
SWE with 15+ years of experience building and maintaining web apps and extensive BE infrastructure
Matthew Jordan
I've been working at a large software company named Kainos for 2 years, and mainly specialise in Platform Engineering. I regularly enjoy working on software products outside of work, and I'm a huge fan of game development using Unity. I personally enjoy Python & C# in my spare time, but I also specialise in multiple different platform-related technologies from my day job.
Anthony Akpan
Developer with 8 years of experience building softwares fro startups
Prakash Prajapati
I’m a Senior Python Developer specializing in building secure, scalable, and highly available systems. I work primarily with Python, Django, FastAPI, Docker, PostgreSQL, and modern AI tooling such as PydanticAI, focusing on clean architecture, strong design principles, and reliable DevOps practices. I enjoy solving complex engineering problems and designing systems that are maintainable, resilient, and built to scale.
Sage Fulcher
Hey I'm Sage! Im a Boston area software engineer who grew up in South Florida. Ive worked at a ton of cool places like a telehealth kidney care startup that took part in a billion dollar merger (Cricket health/Interwell health), a boutique design agency where I got to work on a ton of exciting startups including a photography education app, a collegiate Esports league and more (Philosophie), a data analytics as a service startup in Cambridge (MA) as well as at Phillips and MIT Lincoln Lab where I designed and developed novel network security visualizations and analytics. I've been writing code and furiously devoted to using computers to make people’s lives easier for about 17 years. My degree is in making computers make pretty lights and sounds. Outside of work I love hip hop, the Celtics, professional wrestling, magic the gathering, photography, drumming, and guitars (both making and playing them)
You don't need to be technical. Just describe what's wrong and a verified developer will handle the rest.
Get HelpFrequently Asked Questions
How do I know which endpoints are unprotected?
Use curl or Postman to make requests to each API endpoint without any authentication headers. Any endpoint that returns 200 instead of 401 is unprotected. Also review your route files for handlers that don't reference auth middleware.
Should I protect every single endpoint?
Almost every endpoint should require authentication. The exceptions are typically: login/signup, password reset, public content pages, health checks, and webhook receivers. Everything that touches user data must be protected.