Lovable Production Readiness
Prompt to full-stack app, Supabase built in. Here is what we find when FinishKit scans Lovable apps, and how to fix it before you ship.
Lovable generates full-stack React apps from natural language prompts, with Supabase wired in for auth and data. Popular with indie hackers and non-technical founders shipping MVPs.
Common production issues in Lovable apps
These are the findings FinishKit catalogs as common in Lovable output. Each one comes with detection steps and a ready-to-copy fix.
Auth Check Only in Client Code
The auth gate runs only in a client component (useEffect redirect or conditional render), which an attacker bypasses by disabling JavaScript or hitting the API route directly.
IDOR Vulnerability on REST Endpoint
A REST endpoint returns resources by id without verifying the caller owns that resource. Any authenticated user can access any other user's data by changing the id in the URL.
Missing Row Level Security on Supabase Table
A public Supabase table has RLS disabled or has an overly permissive policy, meaning any authenticated user can read or modify every row regardless of ownership.
Secret API Key Exposed in Client Bundle
A sensitive credential (Stripe secret, OpenAI API key, Supabase service role key) is prefixed with NEXT_PUBLIC_, causing it to be inlined into the browser JavaScript bundle where anyone can read it.
Unverified Stripe Webhook
The Stripe webhook endpoint accepts any POST without verifying the signature header, allowing an attacker to forge subscription events, credit accounts, or cancel subscriptions.
Missing Input Validation on API Route
A POST or PATCH API route spreads the raw request body into a database write without validating that fields exist, match expected types, or lie within expected ranges.
Lovable guides on the blog
How to Deploy Your Lovable App to Production (2026)
Your Lovable app works in preview. But preview isn't production. Here's the step-by-step guide to deploying your Lovable app with proper security, environment config, and monitoring.
securityLovable App Security Checklist: 10 Things to Fix Before Launch
Lovable builds beautiful apps fast. But a May 2025 audit found 10% of Lovable apps had security vulnerabilities exposing user data. Here are the 10 most common issues and how to fix each one.
toolsCursor vs Lovable vs Bolt: What Each Tool Gets Right (and What They All Skip)
Cursor hit $1B ARR. Lovable reached a $6.6B valuation. Bolt crossed 5M users. But all three leave critical gaps. Here's an honest comparison and what to do about it.
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