Is your Bolt.new app secure? The 3 things to check before launch
Bolt.new gets you to a live app fast. Before you put it in front of real users, run these three checks — they catch the failures Bolt apps leak most often.
Updated June 22, 2026 · 4 min read
Check your own app in 30 seconds — free, no login:
Passive scan of your app's public files only — no login, nothing stored, your code never leaves your machine. Scan only apps you own.
Why Bolt apps tend to leak
Bolt.new builds and runs your whole app in the browser, then deploys it for you. That speed is the point — but it also means the AI is wiring up your database and third-party services with very little of the 'where should this secret live' judgment a security-minded developer brings.
The result is predictable. The same two or three holes show up again and again: a real secret key sitting in the client bundle, a Supabase or Firebase backend with no access rules, and endpoints that trust whatever the browser tells them. None of these are exotic — they're just easy to miss when the app 'works.'
The 3 checks
1. Secrets in the bundle. Open your deployed app's JavaScript (DevTools → Sources) and search for 'sk_live', 'sk-', 'AKIA', and 'service_role'. Anything that matches is a secret key the whole internet can read. Publishable keys (pk_live, the Supabase anon key) are fine — it's the secret ones that hurt.
2. Open database. If Bolt connected you to Supabase, confirm Row Level Security is on for every table. If it used Firebase, confirm the rules aren't in 'test mode' (which allows anyone to read and write). Either one open means your users' data is public.
3. Trusting the client. If your app decides who's a paid user, or who's an admin, in the browser, that decision can be edited by anyone. Those checks have to happen on the server.
The fastest way to run all three
Paste your live Bolt app's URL into VibeShield. It does the secret-hunt and the backend detection automatically and returns a plain-English report in about 30 seconds — including copy-paste fix prompts you can hand straight back to Bolt or paste into Cursor.
Whatever you find, fix it before you share the link widely. And if a secret key was exposed, rotate it in the provider's dashboard — removing it from your code does not un-leak a key that was already public.
Frequently asked questions
- Does Bolt.new handle security for me?
- Bolt gets your app running, but it does not guarantee your secrets are server-side or your database is locked down. Those are still on you to verify before launch.
- Is the Supabase anon key in my Bolt app a problem?
- No — the anon key is meant to be public. The real question is whether Row Level Security is enabled behind it. With RLS off, that public key can read your whole database.
Don't guess — scan it
VibeShield checks your live app for exposed keys and open databases in about 30 seconds, and hands you the fixes.
Passive scan of your app's public files only — no login, nothing stored, your code never leaves your machine. Scan only apps you own.