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Is Lovable secure?

Updated 22 October 2026 · 6 min read

Short answer: Lovable the platform is reasonably safe, but your app isn't secure by default. Most real leaks came from the app's own setup: Supabase tables without Row Level Security, secret keys in the browser and permission checks done only in the frontend. Check those three things before real users arrive.

What has actually gone wrong with Lovable apps?

• May 2025, CVE-2025-48757: 170 of 1,645 showcased Lovable apps had database tables anyone could read, because Row Level Security was missing or wrong. (CVE record, write-up)
• February 2026, one app: a researcher reported an inverted login check that exposed 18,697 user records. (source)
• April 2026, the platform itself: Lovable says that between 3 February and 20 April 2026, chat history and source code of public projects could be viewed by other Lovable users. It fixed the issue within two hours and made public projects private. (Lovable's statement)

Two of those three were mistakes inside the built app, not in Lovable. So the better question is: is your app secure?

What does Lovable protect for me?

Lovable runs a security scan when you publish and offers a deeper review (Lovable security). That helps, but a scan can't know your business rules, such as "a coach can see their own students but not other coaches' students".

What should I check in 10 minutes?

1. Project visibility: in Lovable, make the project private if it holds keys or real data. If it was public between February and April 2026, rotate any key you ever pasted into chat.
2. Row Level Security on every table.

   Go through every table in my Supabase database. Turn on Row Level Security for each one. For tables with user data, add policies so a signed-in user can only select, insert, update and delete rows where user_id = auth.uid(). Remove any policy that uses `true` for everyone. Don't change the app's features. When you're done, list every table with its policies in a simple table.

3. No secret keys in the browser. Run a free Vibe Check, or read our guide to hiding API keys.
4. The two-account test: sign in as user A, try to open user B's data by changing an ID in the URL, then try again signed out. A common tip on r/lovable is exactly this. (thread)
5. Server-side role checks for admin pages and edge functions.

   Check every Supabase Edge Function and admin page in my app. Each one must verify the caller is signed in and has the right role on the server, not just hide buttons in the UI. List each one and how it's protected.

More: RLS for non-coders · Check for a leaked Supabase key · One-page checklist

FAQ

Is Lovable safe to use for a real business?

Yes, if you configure your app properly: RLS on every table, no secret keys in the frontend, and server-side permission checks. Lovable's scan helps, but verify the results yourself.

Was my Lovable app affected by the April 2026 incident?

Lovable says only public projects' chat history and source code were exposed, between 3 February and 20 April 2026. Private projects and Lovable Cloud weren't affected. If your project was public, rotate any keys you shared in chat.

Is the Supabase key in my Lovable app a problem?

The anon or publishable key is meant to be public. It's only a problem if Row Level Security is off or too loose, or if a service_role or sb_secret key is exposed.