Cursor security: scan the code Cursor generates before you ship
How secure is Cursor?
Cursor is an AI code editor, not a host, so its security comes down to the code it writes and what you commit. The common issues are committed .env files and keys, missing or comment-only auth checks, and Supabase tables without row-level security. Cursor will generate working code with any of these.
Cursor is an AI-powered editor and agent that writes and edits real code in your repo. Because you own the repo and the deploy, the risk surface is whatever Cursor generates and you accept — which is why a pre-launch scan of the finished repo and live site matters.
The common risks in Cursor apps
Committed secrets and .env files
Fast iteration leads to API keys and .env files committed to the repo, where they persist in history even after removal.
Missing or comment-only auth checks
Generated API routes and server actions sometimes note an auth check in a comment without implementing it, leaving endpoints open.
Supabase RLS off
When Cursor scaffolds a Supabase backend, tables frequently start without row-level security.
Vulnerable or hallucinated dependencies
Generated code can pull in outdated or non-existent packages, a supply-chain risk.
How to check your Cursor app
- Confirm .env is git-ignored and no key is committed in the repo or its history.
- Check that every API route and server action enforces auth in code.
- Enable RLS on all Supabase tables and test logged-out access.
- Audit dependencies for known vulnerabilities before you ship.
Scan your Cursor app before you launch
SafeLaunch checks your repo and live site in about 30 seconds and gives you a prompt to paste back into Cursor to fix each finding.
Cursor security FAQ
Is code written by Cursor secure?+–
Cursor writes production-quality code quickly, but it will generate insecure patterns — committed secrets, missing auth, open databases — if the prompt doesn't prevent them. Review and scan the finished app before launch.
Does Cursor check my app's security?+–
Cursor helps you write and edit code; it doesn't run an independent security audit of the finished app. A pre-launch scan of the repo and live site does that.
How do I scan a Cursor project?+–
Run a SafeLaunch scan on the repo and live site to catch committed secrets, missing auth, RLS gaps and vulnerable dependencies, each with a fix prompt you can apply in Cursor.