Supabase RLS: How Quiet Configuration Errors Leave Databases Vulnerable

Supabase's Row Level Security (RLS) is designed to prevent data leaks at the database layer, but configuration mistakes—often undetected due to missing error messages—can silently expose user data. Understanding the five most common RLS pitfalls is essential for any developer using Supabase, as a single line of missing code can transform a security feature into a vulnerability.