The Complete Lovable Security Checklist for Non-Technical Founders

If you built your app with Lovable, it probably has security issues you don't know about. That's not your fault. Lovable is designed to get you from idea to working app as fast as possible. Security is an afterthought by design. If you're looking for a vibe coding cleanup specialist, start by understanding what's at risk.

A researcher named Taimur Khan found 16 vulnerabilities in a single Lovable-hosted app that leaked more than 18,000 people's data. The app had over 100,000 views on Lovable's own Discover page. Another study found that 170 out of 1,645 Lovable apps (10.3%) had critical row-level security flaws. A CVE (CVE-2025-48757) was officially assigned for the vulnerability.

This isn't rare. It's the default.

This checklist walks you through the most common security issues in Lovable apps and tells you exactly what to check. You don't need to understand code. You just need to know what questions to ask.

What is Supabase RLS and why does it matter?

Every Lovable app uses Supabase as its database. Supabase has a feature called Row-Level Security (RLS) that controls who can see and change data in your database. Think of it like a lock on each row of your spreadsheet. Without RLS enabled, anyone with your app's public URL can potentially read, modify, or delete your entire database. For a deeper dive, read our complete Supabase RLS guide.

How to check: Ask your developer or use Lovable's built-in security scan before publishing. The scan checks whether RLS is enabled on your tables. However, be aware that Lovable's scanner only checks if RLS exists, not whether the policies actually work correctly.

What to do: If you have a developer (or VCJ), ask them to verify that every Supabase table has RLS enabled with policies that restrict access based on the logged-in user's ID.

Are your API keys exposed?

Lovable sometimes generates code with API keys hardcoded directly in the frontend JavaScript files. This means anyone who visits your site can open their browser's developer tools and see your secret keys.

How to check: Open your app in Chrome. Right-click, select "Inspect," go to the "Sources" tab, and search for "sk-" or "sk_live_" or "api_key." If you find anything, your keys are exposed.

What to do: Move all API keys to environment variables or Supabase Edge Functions. Never store secrets in frontend code.

Can someone bypass your login?

Lovable generates authentication flows that look correct but may have gaps. Common issues include: users being able to access protected pages without logging in, users being able to see other users' data by changing the ID in the URL, and sign-up accepting weak passwords like "123456."

How to check: Try accessing your app's internal pages by directly pasting the URL while logged out. Try changing user IDs in the URL while logged in. Try signing up with a simple password.

What to do: Ensure all protected routes require authentication. Implement proper password requirements. Test that users can only access their own data.

Is your app using HTTPS?

If your app URL starts with "http://" instead of "https://", data transmitted between your users and your app can be intercepted.

How to check: Look at your app's URL in the browser. It should show a lock icon and start with "https://".

What to do: Lovable apps deployed on Lovable Cloud should have HTTPS by default. If using a custom domain, make sure SSL is properly configured.

Do you have security headers?

Security headers tell browsers how to handle your app's content. Without them, your app is more vulnerable to attacks like clickjacking and cross-site scripting. Most Lovable apps deploy without security headers.

How to check: Visit securityheaders.com and enter your app's URL.

What to do: Configure security headers in your hosting platform settings.

Are you scanning before every deploy?

Security is not a one-time thing. Every time you add a feature, every time a dependency changes, new vulnerabilities can be introduced. This is exactly what a post-launch maintenance checklist covers.

What to do: Run Lovable's built-in security scan before every publish. Better yet, have a professional review your app regularly. This is exactly what a VCJ maintenance retainer covers.

The bottom line

If you're running a Lovable app with real users and real data, you should assume it has security issues until proven otherwise. The AI that built your app prioritized making it work, not making it safe.

You have two options: learn to audit your app yourself using this checklist, or let someone who does this every day handle it for you.