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.
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.
These are the security issues we find most often in Bolt apps using Firebase.
Firebase projects often launch with permissive test rules that allow anyone to read/write all data.
Security Rules may check authentication but not validate data structure or ownership.
AI may accidentally include Firebase Admin SDK credentials in client-side code.
Rules may grant access to entire collections when only specific documents should be accessible.
Test Firestore and Realtime Database rules for proper access control.
Scan for service account keys in frontend bundles.
Verify all collections have appropriate Security Rules.
Check if rules validate data structure and ownership.
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 deployingBolt.new + Firebase needs Security Rules written before launch. Test mode rules are a common vulnerability - never deploy with them.
Find Security Rules misconfigurations, exposed credentials, and other vulnerabilities before attackers do.
Start Security Scan