How to do a security audit of a Supabase app?
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Short Answer
A Supabase security audit involves five steps: reconnaissance and asset mapping, automated vulnerability scanning, manual configuration review, authentication and authorization testing, and remediation verification.
Detailed Answer
Follow this five-step process to audit the security of your Supabase app:
**Step 1: Reconnaissance and Asset Mapping** Identify all components of your application: frontend URLs, API endpoints, database connections, third-party integrations, and authentication providers. Document what data your app stores and which parts are sensitive. Map the data flow from user input through to storage.
**Step 2: Automated Vulnerability Scanning** Run a VAS scan against your application URL. This automatically checks for exposed secrets, database misconfigurations, missing security headers, authentication weaknesses, and client-side data leakage. Automated scanning catches the most common and easily exploitable issues.
**Step 3: Manual Configuration Review** Review database security rules line by line - automated tools catch missing rules, but overly permissive rules require human judgment. Check environment variable configuration to ensure secrets are server-side only. Review authentication settings including password policies, session timeouts, and OAuth configurations.
**Step 4: Authentication and Authorization Testing** Test every API endpoint without authentication to verify access controls. Try accessing other users' data by manipulating IDs or tokens. Test password reset flows, session handling, and rate limiting. Verify that admin functions are properly restricted.
**Step 5: Remediation and Verification** Fix findings in order of severity (critical first). After applying fixes, re-scan to confirm each vulnerability is resolved. Document what was found and fixed for your records. Schedule follow-up audits after major changes.
This process works whether your Supabase app is pre-launch or already in production.
Security Research & Statistics
of Lovable applications (170 out of 1,645) had exposed user data in the CVE-2025-48757 incident
Source: CVE-2025-48757 security advisory
of data breaches involve databases with misconfigured access controls
Source: Verizon Data Breach Investigations Report
average cost of a data breach in 2023
Source: IBM Cost of a Data Breach Report 2023
Expert Perspectives
“Vibe coding your way to a production codebase is clearly risky. Most of the work we do as software engineers involves evolving existing systems, where the quality and understandability of the underlying code is crucial.”
“The problem with AI-generated code isn't that it doesn't work - it's that it works just well enough to ship, but contains subtle security flaws that are hard to spot.”
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How often should I audit my Supabase app?
Audit before initial launch, then after every major feature addition, authentication change, or new database table. For production apps handling sensitive data, run automated scans weekly and do a full manual audit quarterly. Any time you add a new third-party integration or change hosting configuration, a targeted audit of those changes is warranted.
What tools do I need to audit a Supabase app?
Start with VAS for automated vulnerability scanning - it covers the most common issues in vibe-coded apps. Supplement with browser DevTools to inspect network requests and JavaScript bundles. Use your database provider's dashboard to review access control rules. For deeper testing, tools like Burp Suite or OWASP ZAP can test for injection vulnerabilities and authentication bypasses. Most critical issues are caught by VAS alone.
How much does a security audit of a Supabase app cost?
Self-service automated scanning with VAS is the most cost-effective approach and catches the majority of common vulnerabilities. Professional penetration testing typically costs $5,000-$25,000+ depending on scope. For most Supabase apps, a combination of automated scanning plus a manual review of database rules and authentication logic provides excellent coverage without the cost of a full pentest.