AI platforms · backend platform (Google)

Is my Firebase app secure?

Firebase has no server to protect you: the security rules are the whole access-control layer. The most common AI-generated rule is allow read, write: if true, written to stop a permission error during development and never revisited.

Audit my Firebase app free → Scan the code too

What Firebase usually leaves open

Typical stack: Firestore or Realtime Database, Authentication, Storage and Hosting; security rules decide who reads what.

Firebase rules allow everyone to read/write (Code Scan)allow read, write: if true in firestore.rules, or ".read": true in database rules.
Secret exposed through a browser-public env prefix (Code Scan)A server credential stored next to the public Firebase config in the client.
Storage object or bucket made public (Code Scan)Storage rules or bucket ACLs that make uploads world-readable.
Content Security Policy (CSP)Firebase Hosting serves no Content-Security-Policy unless firebase.json sets headers.
Auth token stored in localStorage (Code Scan)Custom tokens or API responses cached in localStorage.

How to fix it in Firebase

Run the scan, then paste this into Firebase together with the Kavach report. It tells the assistant exactly what to do and what not to touch.

Paste into Firebase

Fix my Firebase security before launch. 1) Rewrite every rule that says if true: require request.auth != null and ownership checks (request.auth.uid == resource.data.owner); show the full rules file. 2) Lock Storage rules the same way. 3) Confirm that nothing but the public Firebase config is in the client bundle. 4) Add security headers in firebase.json. Explain each rule in plain English.

Re-scan when it is done. The grade and the findings list show whether the change took, and monitoring tells you if a later prompt reopens anything.

Questions about Firebase security

Is the Firebase config in my JavaScript a leak?

No. The apiKey and projectId in the Firebase config are public identifiers. Your security rules are what matter, and Kavach reads them from the archive you upload.

Why does Kavach flag if true?

Because it grants the operation to everyone on the internet. Even if true for reads alone exposes all your documents to anyone with the project ID.

Does Kavach test my rules against my live database?

No. It analyses the rules files statically and the hosted site externally. It never signs in or writes to your project.

Can I get a second opinion on a flagged rule?

Yes. Each finding has Ask Kavach AI, which explains whether the rule looks dangerous in context and drafts the corrected rule.

Other platforms

Lovable · Bolt · v0 · Replit Agent · Cursor · Claude Code · Supabase · Vibe coding security scanner

Kavach reports observations from read-only checks, not guarantees; see the disclaimer. Firebase is a trademark of its owner; Kavach is not affiliated with it.