Cursor Production Readiness
AI-first code editor built on VS Code. Here is what we find when FinishKit scans Cursor apps, and how to fix it before you ship.
Cursor is a VS Code fork with deep AI integration for code generation, refactors, and agentic edits. The default pick for professional devs adopting AI coding.
Common production issues in Cursor apps
These are the findings FinishKit catalogs as common in Cursor output. Each one comes with detection steps and a ready-to-copy fix.
Auth Check Only in Client Code
The auth gate runs only in a client component (useEffect redirect or conditional render), which an attacker bypasses by disabling JavaScript or hitting the API route directly.
IDOR Vulnerability on REST Endpoint
A REST endpoint returns resources by id without verifying the caller owns that resource. Any authenticated user can access any other user's data by changing the id in the URL.
Missing Row Level Security on Supabase Table
A public Supabase table has RLS disabled or has an overly permissive policy, meaning any authenticated user can read or modify every row regardless of ownership.
Secret API Key Exposed in Client Bundle
A sensitive credential (Stripe secret, OpenAI API key, Supabase service role key) is prefixed with NEXT_PUBLIC_, causing it to be inlined into the browser JavaScript bundle where anyone can read it.
Unverified Stripe Webhook
The Stripe webhook endpoint accepts any POST without verifying the signature header, allowing an attacker to forge subscription events, credit accounts, or cancel subscriptions.
Missing Input Validation on API Route
A POST or PATCH API route spreads the raw request body into a database write without validating that fields exist, match expected types, or lie within expected ranges.
Cursor guides on the blog
Is My Cursor Project Ready to Ship? The Complete Checklist
You built it with Cursor. It works locally. But is it ready for real users? This comprehensive pre-launch checklist covers security, testing, error handling, deploy config, and everything else Cursor won't remind you about.
toolsCursor vs Lovable vs Bolt: What Each Tool Gets Right (and What They All Skip)
Cursor hit $1B ARR. Lovable reached a $6.6B valuation. Bolt crossed 5M users. But all three leave critical gaps. Here's an honest comparison and what to do about it.
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