Built with Bolt?
Security scanning for Bolt apps
Bolt generates full-stack apps in seconds, but speed can leave security gaps. Exposed environment files and missing CORS configuration are common in Bolt projects.
Free scan. No account required.
Common issues
Top vulnerabilities in Bolt apps
These are the three most common security issues we find when scanning Bolt projects.
Exposed .env and configuration files accessible from the browser
Missing or misconfigured CORS allowing cross-origin attacks
JavaScript bundles containing hardcoded API keys and tokens
How it works
60-second security audit
01
Paste your URL
Enter your Bolt app URL. We handle the rest.
02
Get your score
10 security modules run in parallel against your live site.
03
Fix with AI prompts
Copy the fix prompts into your AI tool and ship secure.
10 security modules, one scan
Every scan checks security headers, SSL/TLS, exposed files, JavaScript secrets, Supabase & Firebase configs, CORS, cookies, email security, and tech detection.
Fix guides for Bolt
Common Bolt security fixes
Exposed .env file
An exposed .env file is a critical leak — it contains API keys, database URLs, and secrets. Here is why it happens in vibe-coded apps and how to lock it down.
Read moreCORS allows all origins
An Access-Control-Allow-Origin: * policy lets any site call your API. Sometimes that is fine, often it is a mistake. Here is how to decide and fix it.
Read moreHardcoded API key in JS
Any secret in your client bundle is public. Here is how to find them, rotate them, and move the calls server-side.
Read moreMissing CSP header
A missing Content-Security-Policy header lets attackers inject scripts into your site. Here is what CSP does, why you need it, and how to add it in Next.js, Vercel, and Supabase apps.
Read moreSupabase RLS disabled
A Supabase table without RLS is readable (and often writable) by anyone with your anon key. Here is exactly how to turn on RLS and write your first policy.
Read moreFAQ
Bolt security FAQ
- Why do Bolt apps often expose .env files?
- Bolt sometimes writes configuration values to files in the deployed directory instead of using proper host env vars. If your .env is public, search the codebase for where secrets are being written to files and move them to Netlify / Vercel env settings.
- Should I tighten CORS in a Bolt app?
- Yes — AI-generated backends usually ship with `Access-Control-Allow-Origin: *`. For authenticated endpoints, replace with an allowlist of your frontend origins.
Scan your Bolt app now
Find security issues before your users do. It takes 60 seconds and your first scan is free.