Lovable is safe to build with, but a Lovable app is not secure by default. In our scan of real Lovable apps, 35.1% had at least one high-severity security flaw, nearly twice the rate of Bolt. The single biggest reason is that Lovable generates a Supabase client with the key hardcoded and relies on Row Level Security you have to configure yourself, and most builders never do.
From our scan data
35.1% of Lovable apps had a high-severity flaw in our scan — the highest of any app builder we tested.
The risks that actually matter
Hardcoded Supabase key with no Row Level Security
Lovable writes your Supabase URL and anon key straight into a client file. The anon key is meant to be public, but only Row Level Security protects your data, and Lovable does not force you to set it up. Without RLS, anyone with the key (now in your repo) can read and write your whole database.
Other hardcoded credentials
API keys for third-party services frequently end up inline in generated code, where they ship to the browser or a public repo.
Missing server-side authorization
Access checks that only run in the UI can be bypassed by anyone talking to your database directly with the public key.
How to secure a Lovable app
- Enable Row Level Security on every table with policies that scope access to the row owner.
- Confirm only the anon key (never the service_role key) is in client code.
- Test access using your own public key to prove your policies actually restrict reads and writes.
- Scan the app for any other hardcoded secret before you launch.