Base44 + Supabase Security
Base44 generates full-stack apps with Supabase as the backend. The AI moves fast — but RLS policies and key management need your attention before launch.
Why Base44 + Supabase?
Base44 defaults to Supabase for database and authentication, auto-generating table schemas and API calls. This tight coupling means every Base44 app shares the same RLS blind spots unless explicitly hardened.
Common Vulnerabilities
These are the security issues we find most often in Base44 apps using Supabase.
RLS Absent on Generated Tables
Base44 creates Supabase tables rapidly but rarely enables Row Level Security. Without RLS, anyone with the public anon key can read or modify all rows in every table.
Service Role Key Leaked to Frontend
AI-generated integration code may embed the service_role key directly in client bundles, bypassing all RLS protections entirely.
Overly Permissive Auth Policies
When Base44 does generate RLS policies, they often allow any authenticated user to read all records — not just their own.
Unprotected Storage Buckets
Supabase Storage buckets provisioned during Base44 scaffolding are frequently left public, exposing uploaded user files.
What We Check for Base44 + Supabase
RLS Policy Audit
Query every public-schema table with the anon key to verify RLS is enabled and policies restrict access appropriately.
Service Key Detection
Scan all JavaScript bundles for the service_role key pattern — it should never appear in client-side code.
Storage Bucket Access
Test Supabase Storage bucket policies for unauthenticated read or write access.
Auth Configuration
Check email confirmation settings, minimum password length, and rate limiting on Supabase Auth.
Quick Security Wins
Apply these fixes right now to improve your security.
Run: ALTER TABLE tablename ENABLE ROW LEVEL SECURITY; for every tableAdd user-scoped policy: CREATE POLICY "own data" ON tablename FOR ALL USING ((select auth.uid()) = user_id);Grep your build output for 'service_role' and remove any matches immediatelySet Storage bucket policies to require authentication before any read or writeEnable email confirmation in Supabase Auth settings before going liveThe Bottom Line
Base44 + Supabase ships fast but ships insecure by default. Enable RLS on every table, keep the service_role key server-side only, and scan before launch.
Secure Your Base44 + Supabase App
Find Row Level Security misconfigurations, exposed credentials, and other vulnerabilities before attackers do.
Start Security ScanFrequently Asked Questions
Does Base44 enable Supabase RLS automatically?
No. Base44 focuses on generating functional code quickly. Row Level Security is a database-level configuration that must be enabled manually for each table. Without it, your anon key grants full read access to every row.
What is the difference between the anon key and the service_role key?
The anon key is safe to expose in frontend code — it respects RLS policies. The service_role key bypasses all RLS and has full admin access. It must never appear in client bundles. Check your Supabase project Settings > API to confirm which key Base44 embedded.
How do I audit my Base44 app's RLS configuration?
In Supabase SQL Editor run: SELECT tablename, rowsecurity FROM pg_tables WHERE schemaname = 'public'. Any row with rowsecurity = false is exposed. Enable RLS and write policies before sharing the app URL with users.
Can I fix RLS issues without rewriting my Base44 app?
Yes. RLS policies are pure SQL added in the Supabase dashboard or SQL Editor. You do not need to change any Base44-generated code. Add the policies, test with the anon key, and your app behaviour stays the same while data access becomes restricted.