Lovable is the most production-plausible of the AI app builders: an opinionated Supabase stack, real exports, working deploys. Which is exactly why its apps reach real users faster than anyone else's — carrying the specific gaps this page covers. I review AI-built apps professionally; these are the Lovable-specific checks, on top of the universal ten.
RLS is your entire authorization layer
Lovable apps query Supabase from the browser. There is no backend middleware to enforce who sees what — Row Level Security policies are the whole story. The checks:
- Every table has RLS enabled. A table without it is public to anyone holding your anon key — which is everyone, because the anon key ships in your frontend bundle.
- Policies check ownership, not just authentication. "Any signed-in user" is the Lovable equivalent of the UI-only authorization failure: sign up with a second account and try to read the first account's rows.
- Write policies are stricter than read policies. Prompt iterations often loosen INSERT/UPDATE policies to make a feature work and never re-tighten them.
Edge functions and keys
- The service-role key belongs only in edge-function secrets — never in frontend code, and grep the repo history, not just the current tree.
- Edge functions that take a user ID as a parameter and act on it without verifying the caller's JWT are confused-deputy machines. The function must derive identity from the token, not the payload.
- Webhooks (Stripe or otherwise) landing in edge functions need signature verification and idempotency — the same webhook rules as everywhere else — and in the generated scaffolds I have reviewed, one or both are routinely missing, so verify rather than assume.
The payments path
- Prices come from the database or Stripe price IDs — never from client state. Checkout amounts assembled in the browser are editable by the browser.
- Entitlements flip on webhook confirmation, not on redirect-back. The success URL is reachable without paying.
- Test the refund and cancellation paths once before launch; Lovable builds the happy path because that is what the prompt described.
Before real users: the short list
- Second-account test on every data surface (the ownership check).
- Rate limiting on auth and email-sending endpoints — bots find Supabase apps fast.
- Database backups verified restorable, not just enabled.
- Error tracking wired; silent edge-function failures are the default otherwise.
- The universal checklist for everything stack-independent.
Want it verified by someone who does this daily? The AI-Build Rescue Review runs the full audit on your actual app in one working day — $1,450 fixed, continue-or-restart verdict, first ten fixes in order. The sample report shows the deliverable.
Frequently asked questions
Is a Lovable app production-ready out of the box?
Closer than most AI builders, because the stack is opinionated (Supabase, edge functions, hosted deploys) — but 'deployed' and 'production-ready' are different claims. The gap is almost always in Row Level Security policies, exposed service keys in edge functions, and payment flows wired for the demo path only. Verify those three and you have covered the majority of real Lovable incidents.
What is the most common security issue in Lovable apps?
Missing or over-permissive RLS policies. Lovable apps talk to Supabase directly from the browser, which means Row Level Security IS your authorization layer — there is no API middleware to save you. A table with RLS switched off entirely is exposed to anyone holding the anon key your app ships publicly; a table whose policy checks authentication but not ownership is readable, and often writable, by any signed-in user. (RLS enabled with no policy at all fails closed — the dangerous states are off, or on with a lazy policy.)
Should I move my Lovable app off Lovable to scale?
Not by default. The exported stack (React + Supabase) is legitimate and portable; migrating out is a real option you own, which is more than most builders offer. Move when you need what the platform cannot express — complex background jobs, heavy server-side logic, compliance constraints — not because 'no-code' sounds unserious. A reviewed, RLS-hardened Lovable app beats an unreviewed hand-built one.
Written by Andrej Dragojevic, Stripe Certified Professional Billing Architect.