Lovable's default choice for backend is Supabase. This combo is powerful for rapid development, but requires proper RLS configuration to be secure. CVE-2025-48757 showed what happens when it's not.
Lovable uses Supabase as its primary backend, automatically setting up database tables, authentication, and real-time subscriptions. This tight integration means most Lovable apps share similar security patterns - and vulnerabilities.
These are the security issues we find most often in Lovable apps using Supabase.
Lovable creates Supabase tables quickly but often skips RLS configuration. This means anyone with your anon key can read ALL data.
When RLS is enabled, policies may be too broad - allowing authenticated users to read/modify other users' data.
Some Lovable apps accidentally include the service_role key in frontend code, bypassing all RLS protections.
Database functions created by Lovable may be callable without authentication, exposing admin functionality.
We query every table with the anon key to verify RLS is enabled and properly configured.
Scan all JavaScript bundles for service_role keys that should never be in frontend code.
Test database functions to ensure they require proper authentication.
Check Supabase Auth settings for weak passwords and missing email verification.
Apply these fixes right now to improve your security.
Enable RLS on ALL tables: ALTER TABLE tablename ENABLE ROW LEVEL SECURITY;Add basic user policy: CREATE POLICY "Users own data" ON tablename FOR ALL USING (auth.uid() = user_id);Remove service_role key from any frontend code immediatelySet minimum password length in Supabase Auth settingsEnable email confirmation for new signupsLovable + Supabase is a powerful combination, but the January 2025 CVE showed that default configurations are not secure. Always enable RLS, write proper policies, and scan before launching.
Find Row Level Security misconfigurations, exposed credentials, and other vulnerabilities before attackers do.
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