The most common security vulnerabilities in Lovable applications—and how to fix them before attackers find them.
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Common vulnerabilities found in Lovable applications
Supabase tables created without RLS enabled, exposing all data to anyone with the public anon key.
Complete database exposure. Attackers can read, modify, or delete all user data.
Query tables with just the anon key. If data returns, RLS is missing.
Enable RLS on all tables: ALTER TABLE your_table ENABLE ROW LEVEL SECURITY; Then write appropriate policies.
Supabase service_role key hardcoded in frontend code, bypassing all security.
Full database admin access. Attacker can bypass RLS entirely.
Search JS bundles for 'service_role' or unusually long Supabase keys.
Remove from frontend immediately. Use anon key for client-side, service_role only in server functions.
OpenAI, Stripe, and other API keys embedded directly in source code.
API abuse, financial charges, data theft through compromised keys.
Search code for patterns like 'sk-', 'sk_live', API key variable assignments.
Move all secrets to environment variables. Use Supabase Edge Functions for server-side API calls.
RLS enabled but policies allow more access than intended (e.g., any authenticated user can access all data).
Data leakage between users, unauthorized access to sensitive records.
Review RLS policies in Supabase dashboard. Test access with different user contexts.
Rewrite policies to check ownership: USING ((select auth.uid()) = user_id)
Users can access the app without verifying their email address.
Fake accounts, credential stuffing success, no account recovery path.
Try signing up with fake email and accessing protected features.
Enable email verification in Supabase Auth settings. Block access until verified.
CSP, X-Frame-Options, HSTS not configured on the deployed site.
Increased XSS risk, clickjacking vulnerability, downgrade attacks possible.
Check response headers in browser DevTools or use VAS scan.
Configure headers in Vercel/Netlify deployment settings or next.config.js.
No minimum password requirements enforced.
Easy brute force attacks, account compromise through weak passwords.
Try creating account with simple password like '123456'.
Configure password requirements in Supabase Auth settings.
VAS scans your Lovable app for all these issues automatically. Free scan, instant results.
Scan Your App NowThe most common issues are: exposed API keys/secrets, missing database access controls (RLS or Security Rules), weak authentication configuration, and missing security headers. These account for over 80% of vulnerabilities in Lovable applications.
Run a VAS security scan for automated detection of common vulnerabilities. Manually check: database access controls, search code for hardcoded secrets, verify authentication settings, and test security headers. VAS catches all of these automatically.
Yes, nearly all Lovable security issues are configuration problems with straightforward fixes. Missing RLS, exposed secrets, weak auth—all have clear remediation steps. Most fixes take under an hour to implement.
Exposed databases and API keys can be discovered within minutes using automated scanners. Attackers actively scan for common patterns. This is why security configuration must happen before deployment, not after.
Lovable provides security features, but they require configuration. Security isn't automatic—you must enable database access controls, manage secrets properly, configure auth settings, and add security headers. The tools exist; you must use them.
CVE-2025-48757 was a mass RLS misconfiguration affecting 170+ Lovable-built apps. The vulnerability wasn't in Lovable's platform, but in apps where developers didn't configure Supabase RLS. Attackers could query exposed databases directly using the public anon key.
Last updated: January 16, 2026