Common signs: users seeing others' data and RLS off on some tables. Usual causes: tables created without RLS and policies that are too broad. What we do: audit every table and policy, test as each role and fix. What you get: tested RLS and a policy report.
Our Supabase RLS audit checks whether your database actually keeps each user's data private. Supabase exposes your tables through a public API, so a missing or weak row level security policy can leak data to anyone with your anon key. A Codersarts engineer reviews every table, storage bucket and function, tests access as each role, and fixes the policies. Fixed price from $29 with 24h delivery.
Supabase RLS Audit at a Glance
Item | Details |
|---|---|
Starting price | $29 for a quick RLS check |
Delivery | 24 hours for a check, 1 day for audit and fixes |
Covers | Tables, views, storage buckets, RPC functions and Edge Functions |
Testing | Queries run as anonymous, logged-in and admin users |
Also checks | Service-role key exposure and SECURITY DEFINER functions |
What you get | Tested RLS policies and a policy report |
Revisions | One revision round included |
What Is Supabase Row Level Security?
Row level security (RLS) is a PostgreSQL feature that Supabase uses to decide which rows each user can read, insert, update or delete. Because Supabase lets your frontend query the database directly, RLS policies are often the only thing standing between one user and everyone else's data.
A table with RLS disabled, or with a policy like "true" for all users, is readable by anyone who has your project URL and anon key, both of which ship with your app.
Signs Your Supabase RLS Needs an Audit
Supabase's security advisor warns about tables without RLS
A user reported seeing someone else's records
Your app was built with Lovable, Bolt, Cursor or another AI builder
Policies use auth.uid() on some tables but not others
The service-role key appears in frontend code or environment files
You added multi-tenant teams or organizations later
Why Supabase Data Leaks Happen
Tables created without RLS
Tables made through SQL or migrations don't always have RLS enabled.
Policies that are too broad
Policies like using (true) let every user read every row.
Missing insert and update checks
Read is protected, but users can write rows for other users or change their own role.
Service-role key in the frontend
This key bypasses all RLS and must stay on the server.
Unprotected functions and storage
RPC functions and storage buckets have their own access rules that are often forgotten.
Quick Checks You Can Try First
Open Supabase's security advisor and list every table without RLS.
Search your frontend code for the service-role key.
Log in as one test user and try to query another user's rows from the browser console.
Check storage bucket policies, not just tables.
If the problem remains, our engineers take it from there.
How We Audit and Fix Your RLS
Inventory. We list every table, view, function and bucket exposed through the API.
Review. We read every RLS and storage policy.
Test. We query as anonymous, normal and admin users, and across tenants.
Fix. We write and apply corrected policies, with your approval.
Verify. We retest every policy and confirm the app still works.
Report. We document each policy and who can access what.
What You Get
A table-by-table RLS report
Corrected policies as SQL migrations
Test results for each role and tenant
Service-role key and function checks
A simple access map for your team
Example result (illustrative)
An AI-built marketplace had RLS enabled on 9 of 14 tables. The orders and messages tables were readable by any logged-in user. We added owner and tenant policies, moved one function to SECURITY INVOKER, and confirmed with role-based tests that each user saw only their own data.
What Is Included and Not Included
Included | Not included |
|---|---|
One Supabase project | Several unrelated projects |
Up to 20 tables in the standard audit | Large schemas (priced by size) |
Policies for tables, storage and functions | Rewriting your app's data model |
SQL migrations for fixes | Supabase hosting or billing changes |
One revision round | Ongoing monitoring |
Pricing for a Supabase RLS Audit
Package | Best for | Starting at | Delivery |
|---|---|---|---|
Quick RLS check | Find tables without RLS and exposed keys | $29 | 24 hours |
Audit and fix | Up to 20 tables, tested and fixed | $199 | 1 day |
Multi-tenant audit | Larger schemas, teams and organizations | $599 | 3 days |
You get a fixed quote after we review your setup. You approve the scope before any payment.
Who This Is For
Founders whose app was built with Lovable, Bolt, Cursor or Base44
Supabase startups preparing to launch
Teams adding organizations or multi-tenancy
Developers who got a Supabase security advisor warning
Agencies delivering Supabase projects
What We Need From You
Read access to your Supabase project, or a schema export
Test accounts for each role
How tenants or teams are structured in your data
Your frontend repository, to check key usage
Code and data privacy
We sign an NDA on request, work with read-only access wherever possible, and never keep copies of your data after delivery. You own all code, reports and notes.
Key Terms Explained
RLS: row level security, rules that limit which rows each user can access
Anon key: the public Supabase key used by your frontend, safe only with correct RLS
Service-role key: a secret key that bypasses all RLS
auth.uid(): the Supabase function that returns the current user's ID inside policies
Common Mistakes We Avoid
Enabling RLS without adding policies, which silently blocks the app
Writing read policies but forgetting insert and update checks
Using the service-role key in client code to make errors go away
Testing only as an admin user
Need More Than One Fix?
Need a broader database security review across PostgreSQL, MySQL or MongoDB? See Database Security.
Related Tasks
Firebase Security Rules Audit & Fix if you also use Firebase
Leaked API Keys & Secrets Cleanup if your service-role key was exposed
Login & Auth Hardening for Supabase Auth settings
Frequently Asked Questions
Is Supabase secure by default?
Supabase gives you strong tools, but security depends on your RLS policies. Tables without RLS, or with broad policies, can expose data through the public API.
Is the Supabase anon key a secret?
No. It's meant to be public, but it's only safe when every table has correct RLS policies.
Will fixing RLS break my app?
It can if done carelessly. We test each change as each role and confirm the app works before applying it.
Do you check storage buckets?
Yes. Storage has its own policies, and they're one of the most common leaks.
Make Sure Users Only See Their Own Data
One missing policy can expose every user's records. Share your project and roles, and a Codersarts engineer will test and fix every table.