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Lovable Security Guide

AI full-stack app builder

high risk level

Lovable generates entire React + Supabase apps from prompts. While it handles auth scaffolding and database setup, AI-generated RLS policies and API key handling frequently contain security gaps that need manual review before production deployment.

Common Vulnerabilities

critical

Missing or overly permissive RLS policies

Lovable often generates Supabase tables without Row Level Security, or with policies that allow any authenticated user to read/write all rows.

Review every table's RLS policies. Ensure SELECT/INSERT/UPDATE/DELETE policies filter by auth.uid() = user_id.

critical

Exposed Supabase service role key

The service_role key sometimes appears in client-side code, bypassing all RLS.

Never use service_role in frontend code. Use the anon key and rely on RLS policies.

high

No input validation on forms

Generated forms often lack Zod/yup validation, allowing injection attacks.

Add schema validation with Zod on both client and server (edge functions).

high

Hardcoded API keys in source

OpenAI, Stripe, and other secret keys placed directly in component files.

Move all secret keys to Supabase Edge Function environment variables.

medium

Missing security headers

Default Lovable deployments lack CSP, X-Frame-Options, and other security headers.

Add security headers via your hosting platform's configuration (Vercel/Netlify headers file).

Pre-Launch Security Checklist

Audit all Supabase RLS policies — ensure every table has row-level filteringRequired

Remove any service_role key from client-side codeRequired

Move all secret API keys to edge function environment variablesRequired

Add Zod validation to all user-facing formsRequired

Enable email verification before allowing sign-in

Add rate limiting to authentication endpoints

Configure security headers (CSP, HSTS, X-Frame-Options)

Review OAuth redirect URIs for open redirect vulnerabilities

Test all CRUD operations as different user rolesRequired

Check that file uploads validate type and size

Security Tips

Always review the generated Supabase migration files before applying them.

Use the Erzo RLS Checker tool to verify your policies are correct.

Don't trust AI-generated auth logic — test edge cases like expired tokens and role escalation.

Scan your Lovable app now

Erzo automatically detects these vulnerabilities and gives you actionable fixes.