Bolt.new + Firebase Security
Bolt.new can quickly integrate Firebase for auth and database. But Firebase's security depends entirely on properly written Security Rules - which AI often skips.
Why Bolt + Firebase?
Firebase is a popular alternative to Supabase in Bolt.new projects, especially for real-time features. The Firebase integration is quick but Security Rules require manual configuration.
Common Vulnerabilities
These are the security issues we find most often in Bolt apps using Firebase.
Test Mode Security Rules
Firebase projects often launch with permissive test rules that allow anyone to read/write all data.
Missing Rule Validation
Security Rules may check authentication but not validate data structure or ownership.
Admin SDK in Frontend
AI may accidentally include Firebase Admin SDK credentials in client-side code.
Overly Broad Collection Access
Rules may grant access to entire collections when only specific documents should be accessible.
What We Check for Bolt + Firebase
Security Rules Analysis
Test Firestore and Realtime Database rules for proper access control.
Admin Credential Detection
Scan for service account keys in frontend bundles.
Rule Coverage
Verify all collections have appropriate Security Rules.
Data Validation
Check if rules validate data structure and ownership.
Quick Security Wins
Apply these fixes right now to improve your security.
Replace test rules with production rules requiring authAdd request.auth != null to all read/write rulesValidate data ownership with request.auth.uid == resource.data.userIdRemove any Admin SDK code from frontendUse Firebase Emulator to test rules before deployingThe Bottom Line
Bolt.new + Firebase needs Security Rules written before launch. Test mode rules are a common vulnerability - never deploy with them.
Secure Your Bolt + Firebase App
Find Security Rules misconfigurations, exposed credentials, and other vulnerabilities before attackers do.
Start Security ScanFrequently Asked Questions
What are Firebase test mode rules and why are they dangerous?
Test mode rules allow anyone to read and write all data: allow read, write: if true. Firebase creates these by default for easy development, but they must be replaced before production. With test mode rules, anyone can access, modify, or delete your entire database.
Does Bolt.new generate Firebase Security Rules?
No, Bolt.new focuses on client-side code and doesn't typically generate Security Rules. You must write rules manually in the Firebase console or firestore.rules file. Without custom rules, your database likely has insecure test mode rules.
How do I check if my Firebase app has secure rules?
In Firebase Console, go to Firestore Database > Rules (or Realtime Database > Rules). If you see 'allow read, write: if true' or a timestamp-based allow rule, your database is insecure. Replace with rules that check authentication: allow read, write: if request.auth != null.
What's the difference between Firebase client SDK and Admin SDK?
Client SDK runs in browsers and respects Security Rules. Admin SDK bypasses all rules and has full access - it's for server-side code only. Never include Admin SDK credentials (service account JSON) in frontend code. Bolt.new's AI may suggest Admin patterns that don't belong in browsers.