Security guide
Is Bolt.new Safe? Security Guide for Bolt Apps
Bolt.new generates a complete full-stack app from a prompt, and — unlike frontend-only tools — lets you pick the backend. That flexibility is great for building fast, but it means the risk surface shifts from app to app.
Quick answer
Bolt the platform is safe. What varies is the app it generates: if you wired up Supabase or Firebase, the same open-database risks from the rest of the vibe-coding market apply. Because Bolt covers more ground (it generates a whole backend, not just a UI), there’s more surface area to check.
What shows up most
Open database (Supabase or Firebase)
The market pattern repeats here: RLS disabled on Supabase, or permissive security rules on Firebase Realtime Database/Firestore. The result is the same — anyone reads (sometimes writes) the data with no password at all.
API keys exposed in the bundle
Same as any AI-generated app: an API key pasted straight into the code, instead of staying server-side, leaks to any visitor who views the page’s source.
Permissive CORS
Full-stack apps generated fast sometimes ship `Access-Control-Allow-Origin: *` on a route that should be restricted, letting another site read responses meant to stay private.
Missing security headers
CSP, HSTS, and X-Frame-Options don’t ship configured by default — the same gap common to nearly every tool in this category.
Check yours
Free tools, no signup, aimed at exactly what this guide describes:
Want the full sweep?
These tools check one page and one angle at a time. The full scan crawls every page of your site and, with a verified domain, tests whether the database is actually locked down.
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