Fundamental Guidelines for Firebase

I've recently started working with Firebase and I'm encountering some issues with the security rules.

My project is a blog website where visitors can read posts, users, and comments without being logged in. However, logged-in and verified users have the ability to create posts.

Below are the security rules I have set:

rules_version = '2';
service cloud.firestore {
  match /databases/{database}/documents {
    match /{document=**} {
      allow read: if true;
      allow write: if request.auth.uid != null;
    }
  }
}

I've received emails from Firebase stating that the rules are not secure because "any user can read your entire database". Is there something I'm overlooking? I want non-logged in users to be able to read the data.

javascriptfirebasegoogle-cloud-firestorefirebase-security

Answer №1

It seems like the issue persists because of the "if true" logic, allowing any user to access others' information. To address this, consider incorporating specific functions in the database that provide more customized tests. It's crucial to prevent an open database in Firestore to maintain data security, which could explain the email you received. I faced a similar situation and opted to switch to Mongo for that specific scenario.

If you prefer to keep the database open, you can disable alert emails from the console. Simply navigate to Firebase alerts, click on settings, choose your project, and select your preference for receiving alerts. Although these alerts can be bothersome, they are Google's way of offering assistance. Best of luck!

Answer №2

When configuring security rules in Firebase, it is recommended to explicitly define access rules for each collection, rather than using a wildcard to match all. This approach ensures that there are no unintended security vulnerabilities present, as Firebase cannot determine if sensitive data is inadvertently being exposed. By setting rules individually for each collection, you are providing a clear and specific framework for access control.

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