What is the most important security check for a Lovable app?

Enable Row Level Security (RLS) on every Supabase table and write policies that check auth.uid(). Then test it: sign in as a second user and try to read the first user's data. If the request succeeds, your policies aren't doing their job.

Is it safe that my Supabase anon key is visible in the browser?

Yes - the anon key is designed to be public, but only when Row Level Security is enabled with proper policies on every table. The key that must never appear in frontend code or prompts is service_role, which bypasses all security rules.

Lovable App Security Checklist

Your Lovable app works - this checks whether it's safe. 20 platform-specific checks covering Supabase Row Level Security, exposed keys, auth and payments. A 2025 audit found about 10% of 1,645 Lovable-built apps had critical vulnerabilities - almost all from the items below.

By Carl Mills - cloud & security engineer • Last updated 9 July 2026 • Progress saves in your browser • free personalized PDF print-out.

0/0 items completed

0/100

Critical only

Import File

Your selections are saved in your browser. Export a personalized PDF print-out any time.

Lovable security FAQ

Are Lovable apps secure by default?

No builder can promise that. A 2025 review of 1,645 Lovable apps found ~10% had critical flaws exposing user data - overwhelmingly Supabase tables with RLS disabled. That's why RLS checks sit at the top of this list.

Is my anon key being public a problem?

No - it's designed to be public when RLS is on with real policies. The service_role key is the one that must never reach the browser or a prompt.

What next once everything's ticked?

Run the general 12-point AI-app launch checklist, check your hosting costs, and export your code so you own it.

Want a professional pass?

A fixed-scope security review covers every item here plus the ones only an engineer would find - with a prioritised fix list.

Get in touch