Platform Teardown · Bolt

Is your Bolt app actually safe for real users?

Bolt generates full-stack apps at speed. Here are the production gaps that appear most often in Bolt-built apps — and how to check yours.

Default stack: Supabase or SQLite · varies

Common gaps in Bolt apps

These aren't hypothetical — they show up in the free audits. See the full production-readiness guide →

Environment variables exposed client-side

Critical

Bolt sometimes scaffolds API keys as `VITE_*` or `NEXT_PUBLIC_*` variables, making them visible in the browser. Secret keys must stay server-side only.

No input validation on API routes

High

Bolt-generated API routes frequently accept request bodies without validation. Unvalidated inputs can cause SQL injection, logic errors, or data corruption.

CORS configured too broadly

High

Default CORS config often allows all origins (`*`). This allows any site to make authenticated requests to your API on behalf of your logged-in users.

No error boundaries in React components

Medium

An unhandled error in any component crashes the entire page tree. Bolt-generated apps rarely include error boundaries at the route level.

Bolt checklist

Check these before you share the URL publicly.

No secret keys prefixed with VITE_ or NEXT_PUBLIC_critical

API route inputs validated with Zod or similarcritical

CORS restricted to known originscritical

Error boundaries at route level

Database queries use parameterized statements (no string interpolation)critical

Related

Not sure if your Bolt app has these gaps?

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