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Finding

Firebase storage listed its contents without a sign in

A plain request to {endpoint} returned an object listing with no sign in, so anyone can enumerate what is stored.

Last updated September 20, 2026

Before launch · Needs a developer

Why AI-built apps get this

Firebase ships with open rules while you build, and the console says so. Turning them into real rules is a separate task with no deadline attached, and the app behaves identically either way.

What it affects

A plain request to {endpoint} returned an object listing with no sign in, so anyone can enumerate what is stored.

What the evidence line looks like

GET https://example-app.firebaseio.com/.json returned 200 with data

Every finding on a result carries a line like this one: the request that was made and the answer that came back. You can run the same request yourself and get the same answer, which is the point.

The fix

Close the storage rules to authenticated callers and serve public files through your own addresses.

Prompt for your coding agent

Close the Firebase storage rules so listing and reading require an authenticated caller.

A result gives you this prompt written for your builder, in its own dialect, and a batch prompt that carries every fix at once.

Incidents that involved this

  • Not verified

    First-quarter 2026 assessment of 200 apps

    183 of 200 vibe-coded apps, 91.5 percent, contained at least one vulnerability traceable to AI hallucination or missing security context.

    2026-04
    Read the incident
  • Observed

    Moltbook records exposure

    An app exposed 4.75 million records, including 1.5 million API tokens and 35,000 email addresses.

    2026-01
    Read the incident
  • Not verified

    Tea app, first breach

    An unprotected storage instance exposed tens of thousands of user images, including identity documents.

    2025-07
    Read the incident
  • Not verified

    Tea app, second breach

    Three days after the first breach, over a million private messages were exposed through an API endpoint with no access control.

    2025-07
    Read the incident
  • Observed

    Lovable-built apps, CVE-2025-48757

    Broken access control reported across 170 production applications built with Lovable.

    2025-05
    Read the incident

Related terms

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Last updated September 20, 2026