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Is your Cursor app safe to launch?

Short answer

Maybe not yet. Cursor is a AI code editor, and apps built with it frequently launch with the doors unlocked — public databases, exposed API keys, and missing access rules. CodeCheck scans your live Cursor app the way a hacker would and tells you, in plain English, exactly what's exposed and how to fix it before you go live.

Check my app — free

Wondering whether your Cursor app is safe to put online? Cursor writes real production code fast, which means it also reproduces real security mistakes fast — especially in custom API routes and database access.

The good news: the problems are common, findable, and fixable — usually in minutes. You don't need to know security. You paste your link, CodeCheck checks your live Cursor app from the outside, and you get a prioritized, plain-English report with copy-paste fixes.

The security gaps we see most in Cursor apps

Across the Cursor apps CodeCheck scans, the same handful of issues come up again and again:

Custom API routes that build SQL from user input (injection risk).
Secrets pasted into client components or NEXT_PUBLIC_ variables.
Supabase tables created without RLS while iterating quickly.

What CodeCheck checks on your Cursor app

CodeCheck fingerprints your stack automatically and runs the checks that matter for it — no configuration:

Whether strangers can read your database (missing Supabase RLS or open Firebase rules).
Exposed API keys and secrets in your frontend code.
Open databases (including MongoDB) reachable without authentication.
SQL injection and common attack paths on your custom endpoints.
Weak security headers, exposed files, and misconfigured CORS.

How to secure your Cursor app before launch

The fastest path is to scan first so you're fixing real, confirmed issues instead of guessing:

Run a free scan to see where you actually stand.
Lock down your database with proper access rules (RLS or Firebase rules).
Move every secret key server-side and rotate anything that was public.
Re-scan to confirm each issue is closed.

Frequently asked questions

Is my Cursor app safe to launch?

It might not be. Cursor apps commonly ship with public databases, exposed keys, or missing access rules — not because Cursor is bad, but because security isn't automatic. Run a free CodeCheck scan of your live app and you'll know for sure in about a minute, with a plain-English list of anything that's exposed and how to fix it.

What are the most common Cursor security mistakes?

The most common issues in Cursor apps are databases without proper access rules (so anyone can read user data), secret API keys left in frontend code, and custom endpoints missing authorization. All three are quick to fix once you know they're there.

Do I need to know how to code to secure my Cursor app?

No. CodeCheck explains each issue in plain English and gives you copy-paste fixes. If you can paste your app's link, you can run the check and follow the steps.

Will scanning my Cursor app break anything?

No. Standard scans are read-only — CodeCheck looks the way an attacker would but never changes or deletes anything. Deeper active tests are opt-in and only run after you verify you own the domain.

See exactly what's exposed — in about a minute.

Paste your link. CodeCheck checks your live app the way a hacker would and hands you the fix in plain English. Free to start, no card.