Is Lovable Secure? What to Check Before You Launch Your Lovable App

You built an app in Lovable. It works, the people who've tried it like it, and now you're ready for paying customers. Then the question hits: is it secure enough?

You're in good company. In just two weeks this fall, three founders asked New Idea Machine what it would take to get the apps they'd built with AI to market. New Idea Machine is a Calgary custom software and AI automation agency serving small business owners worldwide.

I'm AL Del Degan, our CTO. I've built software for 33 years, I've built client screens in Lovable myself, and we teach owners to build their own tools with AI. So I'm a fan.

This guide covers what Lovable does well, what to keep an eye on, and the questions owners ask us most. You'll also meet two real clients from those calls, quoted in their own words. We only left out names and details so no one can tell who they are.

What does Lovable get right about security?

A lot, so let's start there.

• Build on a certified platform: Lovable holds SOC 2 Type II, ISO 27001 and AIUC-1, the certifications large companies ask their software vendors for.
• Catch common database mistakes automatically: a Quick scan runs every time you publish.
• Keep secret keys out of your app: paste one into the Lovable chat and it nudges you to store it in Lovable's Secrets.
• Keep your users' uploads private: files are private by default.
• Test your live app for break-ins: since March 2026, you can order automated penetration testing through Lovable's partner Aikido.

And the biggest win of all: Lovable gets you to a working app fast, without being a coder.

Did you know? Lovable's certifications cover Lovable itself, not the app you build on it. Lovable's own security guide says: "You are responsible for ensuring that your app meets the security requirements."

What security concerns should Lovable owners know about?

Two things, and both have the same fix, one that keeps the screens you built.

Your Lovable app talks straight to your database

Behind your Lovable app sits Supabase. Supabase is the database service that stores everything your app knows: customer names, orders, invoices and uploaded files. Lovable connects your screens directly to it, with no separate cloud-hosted API in between.

Think of a bank, where Supabase is the vault. In most apps, every request goes through a teller who checks who you are and what you're allowed to take. That teller is the API.

In a typical Lovable app, customers walk straight into the vault, and the only thing protecting each box is its own lock. That leaves your app's security entirely to Supabase, and you can't control how Supabase manages it.

Your Lovable app's business rules run on each user's device

Business rules are things like what a customer pays, who can approve an order, or which records a staff member can open. Without an API, those rules run in the screens on each user's own phone or computer.

Anyone who knows how can change what runs on their own device. In bank terms, it's like letting customers fill out their own withdrawal slip and approve it themselves, with no teller to check it.

How far can you take a Lovable app on your own before it needs a code review?

A long way. Build it, test it, and show it to people you trust while it holds no sensitive information.

The moment to bring in a second set of eyes is before you take payments, store customer details or upload private documents. AI tools build what you ask for and rarely tell you what you didn't ask for.

Can a Lovable app on Supabase scale to thousands of customers?

Yes, with an API in the middle: a layer on a server that holds your business rules and checks every request before it reaches your data, like the teller in our bank example.

What you built with Lovable and Supabase works well as a prototype, as long as it's built securely. Supabase handles the database, sign-ins and file storage.

To grow into a product you can sell to thousands of people, you need that API. A typical Lovable app doesn't have one yet, and adding one takes a software developer who knows how to design it.

The good news: you build on what you have. Our second client example below shows what that looks like.

Does Lovable's security scan check who can see each customer's data?

Yes, but only the Deep scan, and only when you start it.

The Quick scan, the one that runs every time you publish, looks for database tables with no lock at all, locks that let everyone in, and known flaws in the building blocks your app uses.

The Deep scan goes further. It checks for "users who can view or change data that is not theirs", ways to skip a payment or a sign-in, and passwords or keys left in your code.

What no scan can know is your own rules, like only a manager can issue refunds.

Pro tip: Write your business rules down as plain sentences, like "A client sees only their own invoices." That list becomes the checklist you, Lovable or a reviewer can test your app against.

Pro tip: Run the Deep scan before every big launch and fix everything it flags. Lovable itself says the scans "do not replace a thorough security review."

Why can logged-in users see everyone else's data when Supabase RLS is missing in a Lovable app?

Because the lock on each record is missing or too loose.

Supabase calls those locks row level security (RLS). Each one decides which records a person can read or change.

When a lock is missing, any logged-in user can read every record. In some apps, people don't even need to log in.

Did you know? In 2025, security researcher Matt Palmer checked 1,645 Lovable apps and found 170 whose database locks let anyone read or change their data. It's on public record in the US National Vulnerability Database as CVE-2025-48757.

Pro tip: Ask Lovable: "For each table in my database, explain in plain English who can read and change its records." If any table holding private information says everyone, or any logged-in user, fix it before launch. Clicking around your own app can't tell you this, because your screens may hide records the database would still hand over.

Is it safe to store sensitive documents in a Lovable app?

It can be, when your documents live in file storage, not in your database.

A database is built for information like names, dates and amounts. Files like contracts and PDFs belong in separate file storage, where each file gets its own lock.

Supabase has exactly that: Supabase Storage, separate from your database, where files are private by default.

Real client example: private documents in a Lovable app

Two real estate co-founders built the first version of their platform in Lovable, then kept building it themselves. It would hold their clients' private documents, information that isn't public.

They told us: "the prototype is functional. And if we get the security piece, we can basically take that to market." Their budget was tight: "we need to do the right thing but for the least amount in this moment."

They got the most important choice right: their documents sit in Supabase Storage, separate from their database.

Pro tip: Ask Lovable: "Where are my uploaded files stored, and who can open each one?" If the answer is your database, move them into file storage before launch.

Do I have to strip and rebuild my Lovable app to make it secure?

Not necessarily. The screens you built in Lovable can stay; what changes is how they reach your data.

Real client example: told to strip and rebuild a Lovable app

A founder in finance built a business platform in Lovable. In their words: "I've been building it in lovable but lovable isn't getting me a to market product."

They'd been told: "it's basically a strip and rebuild. They won't utilize anything that I [built] in lovable."

Here's what I told them: "the stuff built by Lovable is not throwaway... Why would we throw that away? It doesn't make any sense."

As I explained to them, "what Lovable will do is it'll connect it directly to the database. And what we really want is we want Lovable to be just the frontend, and then we want an API in the middle and Supabase accessed only by the API."

In bank terms, we're adding the teller. The screens they built stay, and the business rules move onto a server where users can't change them.

Still deciding? Our guide to rebuild or repair walks through how to tell, and what an AI-built app is worth keeping explains why it's often more than you'd think.

What does a code review of a Lovable app include?

Our Codebase Audit gives you three reports your AI tool can read and act on: a security best-practice review, an architecture review and a modularity review.

I review your code with AI, and every finding comes with how to fix it, so Lovable can make many of the fixes itself. It's a review against best practices, not a penetration test or a certification.

You'll know what to keep, what to fix first, and what can wait. And when you want help after launch, a fractional CTO gives you senior technical leadership for a few hours a month.

Want to go deeper? Find out when your app needs a security review and what it takes to launch an app built with AI.

Start the conversation

No pitch. No pressure. Just cost-saving advice.

AL Del Degan, CTO and co-founder of New Idea Machine, has built software for 33 years, including work with the Calgary Airport Authority, the City of Calgary, and Travel Alberta. He created the AI-assisted process New Idea Machine's senior developers use to build launch-ready apps, saving clients 50 to 75% in time and cost.