Windsurf + Supabase Security
Windsurf's Cascade agent can rapidly integrate Supabase, but AI-generated database code needs careful security review.
Why Windsurf + Supabase?
Windsurf's Cascade agent makes Supabase integration fast with its agentic coding capabilities. This speed can lead to security configurations being skipped.
Common Vulnerabilities
These are the security issues we find most often in Windsurf apps using Supabase.
Cascade-Generated Insecure Queries
Cascade may generate Supabase queries that work but don't enforce proper access control.
Service Key in Auto Mode
When using Auto mode, Cascade may include service_role key in code without prompting.
Missing RLS Configuration
Cascade focuses on functionality over security - RLS policies are often not generated.
Credentials in Workspace
Supabase credentials may be visible in code if not properly added to environment files.
What We Check for Windsurf + Supabase
Generated Code Review
Analyze Cascade-generated Supabase integration for security issues.
Credential Exposure
Verify all Supabase keys are in .env files, not in source code.
RLS Verification
Test all tables for proper Row Level Security configuration.
Query Authorization
Check that queries include proper user authentication checks.
Quick Security Wins
Apply these fixes right now to improve your security.
Use 'Ask' mode in Cascade for database operationsAdd .env files to workspace scope restrictionsEnable RLS on all Supabase tables before using with WindsurfAsk Cascade to help generate RLS policiesReview all Supabase-related file changes before acceptingThe Bottom Line
Windsurf + Supabase is productive, but Cascade's speed means security review is essential. Use Ask mode and review all database code.
Secure Your Windsurf + Supabase App
Find Row Level Security misconfigurations, exposed credentials, and other vulnerabilities before attackers do.
Start Security ScanFrequently Asked Questions
Does Windsurf's Cascade generate secure Supabase code?
Cascade prioritizes functionality over security. It generates working queries but often skips RLS configuration, may hardcode credentials, or create overly broad data access. Always use 'Ask' mode for database operations and review all generated code.
How do I prevent Cascade from exposing Supabase credentials?
Add .env files to your workspace restrictions or exclude them from Cascade's context. Never use Auto mode when working with credential files. If Cascade suggests using service_role in frontend code, reject it - that key bypasses all RLS.
Can Cascade help me write RLS policies?
Yes, ask Cascade to generate RLS policies for your data model. Describe your tables and access requirements. Cascade can write good policies, but test them in Supabase SQL editor - verify policies work by querying as different users.
What should I review in Windsurf-generated Supabase code?
Check for: 1) Hardcoded credentials (should be in .env), 2) Missing auth checks before queries, 3) Queries fetching all data without user filtering, 4) Use of service_role key in client code. Test what an unauthenticated user can access.