Security scanner

Security Scanner for Lovable Apps

Lovable apps are fast to build but come with predictable security gaps. VibeScan scans your live Lovable app for exposed Supabase keys, disabled row-level security, permissive CORS, and more — in under 60 seconds.

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✓ Free  ·  ✓ No login required  ·  ✓ Results in under 60 seconds

89%
of Lovable apps have at least one critical issue
< 60s
to get your full report
5 checks
run automatically on every scan
Free
no credit card, no account
Common vulnerabilities

The security issues we find in most Lovable apps

Lovable makes it easy to ship fast — but the default Supabase configuration, client-side API calls, and autogenerated code patterns create security gaps that attackers specifically target.

Exposed Supabase ANON key in the JavaScript bundle
Lovable apps talk directly to Supabase from the browser, which means your Supabase ANON key ends up in your JavaScript bundle. Anyone who views your page source can extract it. If Row Level Security (RLS) is not properly configured, that key can be used to read or delete your entire database.
Row Level Security (RLS) disabled on Supabase tables
When Lovable creates a Supabase database, RLS is often disabled by default to keep things simple. Without RLS, any authenticated user can query any row in any table — not just their own data. This means user A can read user B's private information just by modifying the query.
Unauthenticated API endpoints
Lovable generates API routes and Supabase Edge Functions without authentication checks. If an endpoint modifies data, sends emails, or processes payments, it should verify the caller is logged in — but generated code often skips this step.
Overly permissive CORS configuration
Some Lovable deployments set Access-Control-Allow-Origin: * on their backend or Supabase project, allowing any website on the internet to make authenticated requests to your API on behalf of your users.
Sensitive data stored in localStorage
Lovable apps sometimes store JWT tokens, user data, or API keys in localStorage. This data is accessible to any JavaScript running on the page — including third-party scripts, browser extensions, and XSS payloads.
Missing security headers on the Lovable deployment
Lovable's default hosting does not add X-Frame-Options, Content-Security-Policy, or Strict-Transport-Security headers. Without these, your app is vulnerable to clickjacking, MIME sniffing, and protocol downgrade attacks.
What VibeScan checks

Every scan runs 8 automated checks

VibeScan looks at everything publicly visible in your Lovable app — the same things an attacker would look at on day one.

  • ✓HTTPS enforcement — detects if your app is served over HTTP
  • ✓Exposed secrets — scans page source for Supabase ANON keys, JWT tokens, API keys
  • ✓Security headers — checks for X-Frame-Options, CSP, HSTS, X-Content-Type-Options
  • ✓CORS policy — detects wildcard Access-Control-Allow-Origin: *
  • ✓Sensitive paths in robots.txt — flags /admin, /api, /dashboard exposure
  • ✓Supabase key detection — identifies exposed service role or ANON keys
  • ✓JWT token exposure — detects Bearer tokens in page source
  • ✓Mixed content — identifies HTTP resources loaded on HTTPS pages
Scan your Lovable app now

Paste your app URL and get a full security report in under 60 seconds. Free, no signup.

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FAQ

Common questions about Lovable security

Is it safe to have my Supabase ANON key in my Lovable app?
The ANON key alone is not catastrophic — it's designed to be public. The real risk is combining it with disabled Row Level Security. If RLS is off, the ANON key becomes a master key to your entire database. VibeScan flags exposed ANON keys so you know to verify your RLS rules are in place.
How do I enable Row Level Security in Supabase for my Lovable app?
Go to your Supabase dashboard → Table Editor → select each table → click "Enable RLS". Then add policies for each table that restrict access to the authenticated user's own rows. Use the Supabase policy editor or ask Lovable to add RLS policies for you.
Can VibeScan detect if my Lovable app has disabled RLS?
VibeScan scans what is publicly visible — the page source, headers, and CORS config. It cannot directly query your Supabase database to verify RLS status. However, it does flag exposed ANON keys, which is the first signal to check your RLS configuration.
My Lovable app is still in beta — do I need to worry about security?
Yes. Beta apps are often targeted specifically because founders assume no one is looking. Bots continuously scan the internet for exposed keys and misconfigured databases. A beta app with real users' email addresses or payment data is just as risky as a production app.
How do I fix missing security headers in my Lovable app?
Add a vercel.json file to your project (if deployed on Vercel) with a headers configuration block. Specify X-Frame-Options: DENY, X-Content-Type-Options: nosniff, and Strict-Transport-Security: max-age=31536000. You can paste this task directly into Lovable and it will add the configuration for you.

Further reading

7 Security Vulnerabilities in Every Lovable App →The Non-Technical Founder's Guide to Vibe Coding Security →Found Exposed API Keys? Here's What to Do Right Now →

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