Is my Base44 app secure? A 2-minute self-check

Base44 gives you a hosted backend and gets you to a working product fast. Because the data layer is built in, it is easy to assume the access rules are handled for you. Some are, but the ones that scope who can read and write your data are yours to set, and that is where the common gaps show up.

Here is a quick self-check for the handful of things that actually bite people. None of it needs special tools.

1. Can a stranger read or write your data?

This is the big one. Base44 stores your app data as entities, each with permission rules. The common mistake is leaving an entity readable or writable by anyone, so a visitor who never logs in can pull the records or change them. Go through each entity and confirm its permissions match who should actually see it. Records tied to a user should be scoped to that user, not open to all.

2. Are there secrets in your bundle?

Open your live app, view source, and search for sk_, service_role, or AIza. A publishable key is meant to be public. A secret key for a payment provider, a model API, or any third-party integration is not. If one is sitting in the page, rotate it and keep it on the server side.

3. Are private files reachable?

Try visiting /.env, /.git/config, and your source-map files directly. None of them should load for a stranger. A reachable .env hands over your secrets, and public source maps rebuild your original code.

4. The basics

Confirm HTTPS is enforced with a valid certificate, that you are not shipping a wide-open CORS policy, and that the common security headers are present.

The shortcut

Going through this by hand once is worth it. To make it quick, we built a free scanner: paste your app URL at task-bounty.com/scan and it shows, in a few seconds, exactly what your live app exposes to any visitor. It is read-only, it never logs in, and it works on any JavaScript or TypeScript app, not just Base44.

Think of it as a flashlight, not a grade. A clean result means the common, cheap-to-find leaks are not showing, which is the exact set of mistakes that turn into an incident. Worth a look before you share your app widely.