Guide Lovable ยท Supabase

My Lovable or Supabase security scan looks clear. Do I still need someone to check before launch?

By the PatchAndShip team Last verified:

Short answer

A clear scan is useful and still not the same as a person confirming your live tables behave the way you expect. Lovable's own security docs say built-in tools "do not replace a thorough security review" and "cannot guarantee complete security," and for apps with sensitive data they suggest considering an additional professional security review. Supabase Security Advisor runs deterministic checks and can WARN when a policy uses always-true conditions such as USING (true) (lint 0024). Even a quieter Advisor is not the whole behavioral test.

What the free tools catch well

Lovable's Quick scan database review looks for tables without per-record access control (row-level security), access rules that let everyone through, and leaked-password protection turned off. Supabase Security Advisor checks for common security problems with the built-in Postgres roles, including RLS switched off on a public table (ERROR "Table publicly accessible", lint 0013) and permissive always-true policies (WARN "Security policy allows unrestricted access", lint 0024).

Those findings matter. Clearing them is real progress. They are still checklist checks against known patterns, not proof that user A's private rows stay private when user B is signed in.

What still falls on you

As a non-developer, three things sit outside a green or quiet scan:

  1. Reading each policy in plain words: does it mean "only the owner" or "everyone"?
  2. The signed-out test: can someone who is not signed in read private data?
  3. The two-account test: can user B see user A's private rows?

Step by step versions of those tests live in the related guides on checking a Supabase app before launch and asking whether your app is leaking data. Keep this page short on SQL; those guides hold the DIY steps.

Honest DIY limits

If you cannot tell whether a rule means "everyone" or "only the owner," or if the app looks fine while you still feel scared to launch, that feeling is information, not a failure. Lovable already frames its tools as support for secure development, not a complete-security guarantee. Supabase notes that some Advisor findings may be intentional, so you still check them against your intended access model.

A clear scan answers "did these known checks fire?" It does not answer "did I prove live row access myself?"

Current Advisor docs include WARN 0024 for policies that use always-true conditions such as USING (true), including patterns that defeat RLS on SELECT. Advisor may warn on those. It does not leave always-true read policies unchecked by design. A quiet Advisor still is not the same as the signed-out and two-account tests.

What a second look can cover vs what it is not

The $49 Database Check is a read-only review of one app's Supabase or Lovable Cloud database from a script you run. Public scope covers:

  • Row Level Security and policies
  • anon and authenticated grants
  • storage buckets
  • Security Advisor or Lovable security scan findings
  • where a service_role or secret key appears

You run the script and send the results. No passwords, no keys, no login to your account. We change nothing. You get a red, yellow or green report that a human engineer reviews and approves.

It is not a penetration test, a security guarantee or a compliance certification. If the report finds work and you ask, Security Fix is a separate next step. This page is only about whether a clear scan is enough before you publish.

Want a second pair of eyes?

If the scan is clear and you still want a human-reviewed read-only look before you publish, the $49 Database Check is script-only: you run it, you send the results, we change nothing. AI agents run the checks and a human engineer reviews and approves every report. Not a penetration test, a security guarantee or a compliance certification.

See plans and prices

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