Supabase Storage Security Audit: Protect Your Assets

Find public storage buckets and missing RLS policies in your Supabase project before sensitive files are exposed.

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Technical Audit Procedure

storage_leak_audit.sql

Terminal|storage_leak_audit.sql

-- Find buckets marked as public that contain objects.

1SELECT 
2  name as bucket_name, 
3  public 
4FROM storage.buckets 
5WHERE public = true;

Market Comparison

Why industry leaders choose DBX Deterministic Audits

Feature	DBX Engine	Manual Audit	Legacy Scanners
Deterministic Path Analysis
Zero-Credential Architecture
Real-time Attack Path Graph
Automatic RLS Validation
Instant Compliance Proof
Copy-Paste Remediation

Technical Deep Dive

In Supabase, storage is just a set of Postgres tables under the hood (storage.buckets and storage.objects). If these tables aren't protected by Row Level Security, your private files are just a direct URL guess away from exposure. DBX audits your storage policies with the same technical depth as your data tables, ensuring your S3-backed assets are truly protected.

File-level security assurance

Bucket leak prevention

Integrated storage/data audit

Direct policy remediation

Primary Vulnerability Vectors

01
Publicly accessible private assets
02
Unauthorized file deletion
03
Bucket-level data exfiltration

Audit Checklist

Verify RLS is enabled on 'storage.objects'

Check for 'public' flag on sensitive buckets

Audit storage policies for auth.uid() owner checks

Validate that bucket-level policies don't conflict with RLS

Scan for SECURITY DEFINER leaks in storage triggers

How it works

High-integrity schema introspection

Introspect

Run a read-only script to extract your database catalog. No data ever leaves your machine.

Simulate

Our engine executes billion-path simulations to find logical RLS bypasses.

Remediate

Receive copy-paste SQL fixes for every high-risk vulnerability discovered.

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