A Supabase Service-Role Key Is Exposed in a Lovable App
Quick Answer
The Supabase service-role key was placed in client-side code, a public env var, or a route that leaks it indirectly. Unlike the anon key, the service-role key has elevated privileges and should never reach the browser. Start with "Rotate the service-role key immediately" before making broader code changes.
Quick Fix Summary
| Most likely cause | The Supabase service-role key was placed in client-side code, a public env var, or a route that leaks it indirectly. Unlike the anon key, the service-role key has elevated privileges and should never reach the browser. |
| Fastest fix | Rotate the service-role key immediately |
| Use this page if | The browser bundle includes a service_role key |
You're in the right place if...
- !The browser bundle includes a service_role key
- !A privileged key appears in logs, screenshots, or frontend code
- !Anyone with the key could bypass normal RLS protections
Why this happens
The Supabase service-role key was placed in client-side code, a public env var, or a route that leaks it indirectly. Unlike the anon key, the service-role key has elevated privileges and should never reach the browser.
Fix
Rotate the service-role key immediately
Treat this as a credential leak, not a code cleanup. Replace the key in Supabase, update secure server-side env vars, and invalidate the exposed key.
Move privileged operations to trusted backend code
If the app needs service-role access for admin or cron work, isolate it inside server-only routes, Edge Functions, or backend jobs that never expose the raw key.
Search for the leak path
Check NEXT_PUBLIC vars, client components, browser fetch calls, screenshots, and git history. Service-role leaks often happen through debugging shortcuts.
rg -n "SERVICE_ROLE|SUPABASE_SERVICE_ROLE_KEY|service_role" src .env*
Patch the generated integration
Tell Lovable to assume the service-role key is server-only and remove it from the frontend entirely.
Copy this prompt
Audit this app for any use of SUPABASE_SERVICE_ROLE_KEY or service_role credentials in browser code, public environment variables, or client-side SDK initialization. Move privileged operations to server-side routes and make sure the frontend only uses the anon key.
Prevent this next time
The anon key belongs in the client. The service-role key does not. Keeping that boundary clean prevents an entire class of catastrophic leaks.
Frequently Asked Questions
Yes. The anon key is designed for client use with RLS. The service-role key has elevated power and can bypass those protections.
No. If the browser receives it, it is exposed regardless of minification.
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