Cursor + Supabase Security
Cursor's AI speeds up Supabase integration, but AI-generated database code needs careful review for security issues.
Why Cursor + Supabase?
Cursor's AI excels at generating Supabase queries and integration code. This speed can lead to skipped security configurations.
Common Vulnerabilities
These are the security issues we find most often in Cursor apps using Supabase.
AI-Generated Insecure Queries
Cursor may generate queries that work but don't respect authorization boundaries.
Credentials in AI Context
Service keys may be suggested in code or accidentally included in AI context.
Skipped RLS Setup
AI focuses on functionality over security - RLS is often not configured.
Missing Error Handling
Generated code may expose database errors that reveal schema information.
What We Check for Cursor + Supabase
Generated Query Analysis
Review AI-generated Supabase queries for security issues.
Credential Management
Verify credentials are in env files, not in code or AI history.
RLS Configuration
Test all tables for proper Row Level Security.
Error Handling
Check that database errors don't leak sensitive information.
Quick Security Wins
Apply these fixes right now to improve your security.
Add Supabase service keys to .cursorignoreReview all AI-generated Supabase code for hardcoded valuesEnable RLS and ask Cursor to help write policiesAdd proper error handling that doesn't expose schemaTest generated code with different user rolesThe Bottom Line
Cursor + Supabase is productive, but AI-generated code needs security review. Use Cursor to help write RLS policies, not skip them.
Secure Your Cursor + Supabase App
Find Row Level Security misconfigurations, exposed credentials, and other vulnerabilities before attackers do.
Start Security ScanFrequently Asked Questions
Does Cursor's AI write secure Supabase code?
Cursor's AI prioritizes functionality over security. It will generate working queries but often skips RLS configuration, hardcodes credentials, or creates overly broad data access patterns. Always review AI-generated database code for security issues before using it.
How do I prevent Cursor from exposing my Supabase service key?
Add your .env file to .cursorignore to prevent the AI from seeing sensitive credentials. Never paste service keys into chat. If Cursor suggests using service_role key in frontend code, reject it - the service key should only be used in server-side code.
Can Cursor help me write RLS policies?
Yes! Ask Cursor to generate RLS policies for your data model. Provide your table schema and describe who should access what. Cursor can write good policies, but test them with the Supabase SQL editor - try queries as different users to verify the policies work correctly.
What should I look for when reviewing Cursor's Supabase code?
Check for: 1) Hardcoded credentials (should be in env vars), 2) Missing auth checks before queries, 3) Queries that fetch all data without user filtering, 4) Error handling that exposes database schema. Run queries in Supabase's SQL editor to test what an unauthenticated user can access.