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# Supabase Security Audit Report

**Target:** https://myapp.example.com
**Project:** abc123def.supabase.co
**Date:** January 31, 2025
**Auditor:** Internal Security Team

---

## Executive Summary

### Overview

This security audit identified **12 vulnerabilities** across the Supabase implementation, including **3 critical (P0)** issues requiring immediate attention.

### Key Findings

| Severity | Count | Status |
|----------|-------|--------|
| 🔴 P0 (Critical) | 3 | Immediate action required |
| 🟠 P1 (High) | 4 | Address within 7 days |
| 🟡 P2 (Medium) | 5 | Address within 30 days |

### Security Score

**Score: 35/100 (Grade: D)**

The application has significant security gaps that expose user data and allow privilege escalation. Critical issues must be addressed before the application can be considered secure.

### Most Critical Issues

1. **Service Role Key Exposed** — Full database access possible
2. **Database Backups Public** — All data downloadable
3. **Admin Function No Auth** — Any user can access admin features

### Recommended Actions

1. ⚡ **Immediate (Today):**
   - Rotate service role key
   - Make backup bucket private
   - Add admin role verification

2. 🔜 **This Week:**
   - Enable RLS on all tables
   - Enable email confirmation
   - Fix IDOR in Edge Functions

3. 📅 **This Month:**
   - Strengthen password policy
   - Restrict CORS origins
   - Add rate limiting to functions

---

## Critical Findings (P0)

### P0-001: Service Role Key Exposed in Client Code

**Severity:** 🔴 Critical
**Component:** Key Management
**CVSS:** 9.8 (Critical)

#### Description

The Supabase service_role key was found in client-side JavaScript code. This key bypasses all Row Level Security policies and provides full database access.

#### Location

#### Impact

- Full read/write access to all database tables
- Bypass of all RLS policies
- Access to auth.users table (all user data)
- Ability to delete or modify any data

#### Proof of Concept

```bash
curl 'https://abc123def.supabase.co/rest/v1/users' \
  -H 'apikey: [service_role_key]' \
  -H 'Authorization: Bearer [service_role_key]'

# Returns ALL users with full data

// Move privileged operations to Edge Functions
// supabase/functions/admin-action/index.ts

import { createClient } from '@supabase/supabase-js'

Deno.serve(async (req) => {
  // Service key only on server
  const supabase = createClient(
    Deno.env.get('SUPABASE_URL')!,
    Deno.env.get('SUPABASE_SERVICE_ROLE_KEY')!
  )

  // Verify caller is admin before proceeding
  // ...
})

-- Make bucket private
UPDATE storage.buckets
SET public = false
WHERE name = 'backups';

-- Delete or move files
-- Consider incident response procedures

## Score Calculation

The security score is calculated based on:

| Factor | Weight | Calculation |
|--------|--------|-------------|
| P0 findings | -25 per issue | Critical vulnerabilities |
| P1 findings | -10 per issue | High severity issues |
| P2 findings | -5 per issue | Medium severity issues |
| RLS coverage | +10 if 100% | All tables have RLS |
| Auth hardening | +10 | Email confirm, strong passwords |
| Base score | 100 | Starting point |

### Grade Scale

| Score | Grade | Description |
|-------|-------|-------------|
| 90-100 | A | Excellent security posture |
| 80-89 | B | Good, minor improvements needed |
| 70-79 | C | Acceptable, address issues |
| 60-69 | D | Poor, significant issues |
| 0-59 | F | Critical, immediate action needed |

## Context Input

The report generator reads from `.sb-pentest-context.json`:

```json
{
  "target_url": "https://myapp.example.com",
  "supabase": {
    "project_url": "https://abc123def.supabase.co",
    "project_ref": "abc123def"
  },
  "findings": [
    {
      "id": "P0-001",
      "severity": "P0",
      "component": "keys",
      "title": "Service Role Key Exposed",
      "description": "...",
      "location": "...",
      "remediation": "..."
    }
  ],
  "audit_completed": "2025-01-31T15:00:00Z"
}

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