Firebase Api Key Exposed. If a bad actor wants to call your API routes from Postman, yo

If a bad actor wants to call your API routes from Postman, your referrer whitelist isn't going to stop them. It is fine. firebase_api_key in your code. But how about preventing someone from making their own client and use our exposed firebase configs to do some shady stuffs towards our realtime database? Apply Restrictions to the API Key Every firebase project is a GCP (Google Cloud Platform) project, so we can go to Google Cloud console to configure En cambio, cuando tu app realice una llamada a una API de Firebase que requiera una clave de API proporcionada por el cliente web o móvil, tu app buscará automáticamente una clave de API en su propia configuración de Firebase. Tagged with firebase, security, webdev, opensource. Hundreds of the most sensitive keys can be abused to issue payments and refunds and obtain private data and communications. Dec 4, 2024 · Never Hardcode API Keys: Keep sensitive information like Firebase URLs and API keys out of your app’s source code. Those must be kept secret, as they are supposed to be used from your server and do not have limitations as to where they have access. Dec 18, 2020 · This post discusses some steps to keep a Firebase project safe and secure. Decompile the Android app 2. FCM key should only exists in trusted environment like your server, cloud functions etc. May 13, 2021 · A blog post I usually define my security rules using a package named @jahed/firebase-rules. MainActivity->onCreate I tried adding this line of code in the build gradle file and specifying the keys in the local. FIREBASE_API_KEY }} Into your github action script, which will execute your script and set the Secret Key. That said, none of these should be committed to repository for other reasons. tools. The content of the Firebase config file or object is considered public, including the app's platform-specific ID (Apple bundle ID or Android package name) and the Firebase project-specific values, like the API Key, project ID, Realtime Database URL, and Cloud Storage bucket name. Right now I'm using Envied for encrypting the API keys inside this app. 1 million private messages Jun 21, 2020 · Using firebase real time database this happens => Your API key is invalid, please check you have copied it correctly. Mar 5, 2025 · Exposed Firebase API keys and service accounts are among the most common and dangerous attack vectors in Firebase exploitation. The Firebase API key is meant to be exposed to the public for identifying your project and does not have any administrative power. If you have already exposed a different key that was supposed to be kept private, there are options available to mitigate the When building applications with Firebase, developers are often given an apiKey during the Firebase project setup. That's why your webpage needs the API key. Feb 13, 2023 · A guide on how to save API KEYS in a new . and bypassed their Enterprise paywall just by opening an application. Even after diligently configuring package name and SHA1 restrictions in the GCP Console, the warning often persists, leaving you frustrated and confused. , Maps SDK, Places API, Firebase), you’ve likely encountered the dreaded "Exposed GCP API Key" warning in the Google Play Console. After I looked online, I found out that Firebase API keys are not secret, thus it doesn't matter exposing them. Jun 22, 2023 · Bug Bounty POCs Episode 1 - Exposed Firebase Configuration rashahacks 1. You'll now just have to use environment. Esta configuración se agregó a la base de código de tu app cuando la conectaste a Firebase. spyOn - And You Should Too 3 Master Regex for Free: 3 Fun and Interactive Sites Every Dev Should Know 4 3 days ago · Firebase Configuration - Firebase App ID: 1:3988303863:android:e526d34fb9c584372c08f2 - Firebase Project ID: sentuh-tanahku-e96e4 - Firebase Storage Bucket: sentuh-tanahku-e96e4. example. Oct 29, 2025 · Firebase/mobile config files that can lead to misconfigured rules and data exposure. Mar 27, 2019 · If you have ever used Firebase services in your web application development, you are well aware that there is no way to hide Firebase… The author suggests that while the Firebase API key can be exposed without major security implications, other API keys should be treated with caution and kept private. Since the API key is exposed on the client, my fear is th Dec 27, 2023 · Firebaseは多機能かつ使い勝手も良いため、mBaaSやFirebase Authentication/Identity PlatformをIDaaSとして利用している方も多いのではないでしょうか。ただし便利な反面、考慮が不足していると、意図しないセキュリティの穴を招いてしまうことがあります。 Firebaseを安全に利用するため、考慮すべき観点に Glad I could help :) they may n/a this though, I did some digging and according to everything I can find it's not a security risk to have a firebase api key exposed. Dec 27, 2023 · Firebaseは多機能かつ使い勝手も良いため、mBaaSやFirebase Authentication/Identity PlatformをIDaaSとして利用している方も多いのではないでしょうか。ただし便利な反面、考慮が不足していると、意図しないセキュリティの穴を招いてしまうことがあります。 Firebaseを安全に利用するため、考慮すべき観点に Jan 5, 2025 · （Firebase の API キーは公開される前提で設計されているため Firebase プロジェクト側での対策をする） API公開についてアプリを初めて個人開発していて、git hubにpushをいつも通りしていると、 git hubで何やらアラートが出ていた。初めてみたため焦る。 Oct 13, 2024 · FirebaseのAPIキーを晒した際にGoogleから送られる警告メールについて解説しています。 Jul 3, 2023 · Bug Bounty Hunter — Detection of leaking API keys Hello folks, I hope you are having a good week. homeScreen. I found firebase credentials leaks at https://mpulse. By default, the Android API Key created by Firebase can expose sensitive remote config data for your app. ## Summary: During my test , in one of the subdomain of mtn. using AWS Lambda or Google Cloud Functions) which can forward the request with the required API key or secret. But it didn't work. Since API keys being exposed is a serious issue. com/v1/shortLinks?key=AIzaSyAw-SpLHVTIP3IFEIkckCuEmIhnUrY9OrQ'; ``` {F1129971} After that We would like to show you a description here but the site won’t allow us. Netflix. 33K subscribers Subscribe Jan 17, 2024 · How I Took Over a Firebase Database With 10 Lines of Code If the title sounds a little ridiculous, its because it actually is that simple to overwrite a firebase database. Since the API key is exposed on the client, my fear is th ## Summary: During my test , in one of the subdomain of mtn. com. I plan on using firebase JUST for user authentication (not using firestore or realtime db). Such as database rules on firebase. Dec 28, 2024 · The Firebase API key can be safely exposed without compromising security. If a Firebase database is publicly exposed, it means that anyone can access and manipulate the data stored in the database without any authentication or authorization. xml inside the resources. Audit Regularly: Check your Firebase settings often to ensure there are no accidental misconfigurations. The Firebase API key mainly helps Google servers recognize your project and… src/ ├── app/ # Next. Feb 14, 2025 · I recently discovered that an app from the Shopify App Store is exposing my API credentials (Firebase and MSG91 keys) publicly. env file for security, separation of cconcerns, and reusability in your coding journey. But how about preventing someone from making their own client and use our exposed firebase configs to do some shady stuffs towards our realtime database? Apply Restrictions to the API Key Every firebase project is a GCP (Google Cloud Platform) project, so we can go to Google Cloud console to configure Sep 25, 2025 · Similarly, misconfigured Realtime Databases revealed private chat logs and geolocation information, while Remote Config endpoints exposed private API keys for third-party services. g. API keys for Firebase are different from typical API keys Jul 27, 2025 · In this write-up, we’ll walk you through the journey—from finding an exposed API key to exploiting a Google Firebase API and gaining access to a Firebase storage bucket. Dec 9, 2023 · The Firebase API key mainly helps Google servers recognize your project and isn’t a big security threat if it’s exposed. Emerge scans your app and warns you if this security issue is detected. Dec 7, 2021 · However, this is only due to how Firebase works, not because exposing API key in general is safe. -> Remediation: enforce Firebase rules, rotate API keys, restrict project access. However, implementing robust security measures, such as security rules, SDK auto-configuration, and Firebase App Check, provides an additional layer of protection against abuse and ensures the integrity of your Firebase project. js server with express framework, and I want to store a private key for admin APIs in my server. Exploiting this vulnerability attacker is able to upload malicious data in the firebase account of pulseradio. ug I found firebase configuration disclosed in the source code along with apiKey and database URL . Feb 15, 2022 · Leaked GCP API Keys Your app contains exposed Google Cloud Platform (GCP) API keys. ## Steps To Reproduce: POC : Jan 12, 2026 · Firebase uses API keys only to identify your app's Firebase project to Firebase services, and not to control access to database or Cloud Storage data, which is done using Firebase Security Rules. Mar 12, 2025 · Over 51,000 Firebase endpoints, thousands open to outsiders. ng/ search for 'Initialize Firebase' as you can see the firebase details are commented. Mar 13, 2025 · The Hidden Goldmine: Exploiting Exposed API Keys & Tokens in 2025 🔥 How Hackers Are Cashing In on Exposed API Keys 💰🔐 Introduction 🚀 Imagine stumbling upon a hidden treasure chest on the … Mar 27, 2024 · Cyberheals revealed that over half of the 50 examined mobile apps unintentionally exposed sensitive keys, such as Google Maps API and Firebase Database keys, within their source or configuration files. Sep 25, 2025 · Exposed API keys have caused costly leaks at startups and tech giants alike. Mar 27, 2019 · If you have ever used Firebase services in your web application development, you are well aware that there is no way to hide Firebase… Dec 4, 2021 · I was wondering how to to secure firebase auth. app - Google Crash Reporting API Key: AIzaSyB1rdZzxRnxPWH0Dzh4rs_1AyMa7jTOM7E Jan 10, 2026 · This document explains the dual backend architecture employed by the AI Smart Glasses companion application. Dec 9, 2024 · The Google Firebase API keys can be seen when the APK is analysed in Android Studio and strings. I'm now using . e. Nov 4, 2022 · FCM key shouldn't exists in your public app like downloaded to your instance, Store in local storage, Hardcode inside application etc. Steal sensitive customer data Jun 21, 2020 · Using firebase real time database this happens => Your API key is invalid, please check you have copied it correctly. js App Router pages and API routes │ ├── api/ # API routes │ │ ├── health-check/ # Health check endpoints │ │ ├── cypress/ # Cypress test execution │ │ └── notify/ # Notification endpoints │ ├── projects/ # Project management pages │ └── history/ # Execution We would like to show you a description here but the site won’t allow us. firebasestorage. McAfee. You c… Feb 14, 2025 · I recently discovered that an app from the Shopify App Store is exposing my API credentials (Firebase and MSG91 keys) publicly. arsc is opened, for a flutter app I'm developing. Mar 31, 2025 · During my security assessment, I uncovered a critical misconfiguration — a Firebase API key was exposed in the production environment. ## Summary: Hello. Jul 8, 2023 · Conclusion Exposing the Firebase apiKey to the public can have severe security implications for your application and data. However, in the case of firebase there are essentially two API's, the client SDK and the admin SDK. ## Steps To Reproduce: POC : I've set up the authentication system with firebase auth, and I want to make this project open-source. Oct 13, 2024 · FirebaseのAPIキーを晒した際にGoogleから送られる警告メールについて解説しています。 Sep 24, 2023 · That’s correct, did you read the documentation that I linked to: Unlike how API keys are typically used, API keys for Firebase services are not used to control access to backend resources ; that can only be done with Firebase Security Rules (to control which users can access resources) and App Check (to control which apps can access resources). The client SDK is meant to be used on the client, and the keys are fine to use/expose on the client side. ## Supporting Material/References: Via decompilation an attacker can get the project Feb 13, 2025 · Finding Hidden API Keys, Tokens, and Sensitive Information in Applications A Practical Guide to Discovering Exposed Credentials and Secrets in Code, Repositories, and Applications Introduction API … Oct 12, 2023 · I am using Firebase App Check as part of my web application which I intent to expose to the public (production). Why does this happen? Are Jan 7, 2026 · I Accidentally Exposed My API Keys to 50,000 Users (And How You Can Avoid My $3,000 Mistake) # webdev # security # frontend # programming Dev's life (4 Part Series) 1 The Octopus Who Traveled Through Git Time 2 Why Senior Frontend Devs Use jest. Wipe out my Firebase and MSG91 balances, as full access is exposed. This exposes the key to anyone who accesses the repository and can potentially lead to unauthorized access to your Firebase project. You can also see this Do I need to protect my firebase Server Key?. Discover Firebase, Google’s mobile and web app development platform that helps developers build apps and games that users will love. This key is used in a variety of instances, most notably when integrating Firebase services into frontend applications. We also have a documentation page dedicated to API Keys. The issue When you create a Firebase account, some API Keys are automatically generated on the Google Cloud Console. mtnonline. The author suggests that while the Firebase API key can be exposed without major security implications, other API keys should be treated with caution and kept private. Jul 27, 2025 · In this write-up, we’ll walk you through the journey—from finding an exposed API key to exploiting a Google Firebase API and gaining access to a Firebase storage bucket. Dec 4, 2021 · I was wondering how to to secure firebase auth. I accidentally exposed 900+ emails 🚨, including Microsoft. Jul 28, 2025 · The Tea app data breach has grown into an even larger leak, with the stolen data now shared on hacking forums and a second database discovered that allegedly contains 1. This could be a serverless function (e. May 27, 2016 · For a longer explanation of what Firebase uses this configuration data for, and for which of them you can set quotas, see the documentation on using and managing API keys. co. This includes not just public keys but also private secret keys, which means anyone can: Send SMS messages or push notifications on behalf of my store without my consent. Use the project name (i. This allowed unauthorized access, potentially enabling attackers to read, write, or modify database records, posing a significant security risk. Thousands of keys exposed for Fabric API, Live Branch, MobApp Creator, and others. properties file. Aug 25, 2020 · A security researcher foundd that Google Firebase FCM keys left in app files could be used to launch mass spam and phishing notifications. Jan 12, 2026 · On this page General information about API keys and Firebase API keys for Firebase are different from typical API keys Creating API keys Finding your API keys Using an API key Review and apply appropriate restrictions to API keys (recommended) Review the APIs automatically added to the allowlist for your Firebase API keys Jan 18, 2024 · When working with Firebase Cloud Messaging in a React application, creating a service worker (the Tagged with javascript, react, node, firebase. com >> right click >> view Jan 6, 2023 · I'm looking for a secure way to handle API keys in my NextJS web app using Firebase. Firebase exploits What is Firebase? Firebase, a platform offered by Google, serves as a robust toolkit for creating web and mobile applications. There are different API keys from firebase, such as credentials for your service account. ug and see database over there . According to the firebase docs: The content is considered public, including your platform-specific ID (entered in the Firebase console setup workflow) and values that are specific to your Firebase project, like your API Key, Realtime Database URL, and Storage bucket name. Do a string search for `firebase_database` 3. If API keys or service account credentials are hardcoded or pushed to public repositories, attackers can gain unauthorized access to Firebase services. It encompasses an array of services such as real-time database, authentication, hosting, cloud functions, and more, all efficiently managed in the cloud. `msdict-dev`) in combination with the Firestore REST API to modify the database. The security impact 5 days ago · Learn how to secure and manage your Google Maps Platform API keys. A full-featured expense tracker with Firebase authentication, real-time database, categories, charts, and dark mode - richu337/expense-tracker Keyhacks is a repository which shows quick ways in which API keys leaked by a bug bounty program can be checked to see if they're valid. There’s a topic I’m obsessed with these days and I’ve been thinking a lot about it. If you'd like to reduce the risk of committing this configuration data to version control, consider using the SDK auto-configuration of Firebase Hosting. But when it comes to other API keys, it’s important to be cautious and keep them private. It's only useful for preventing other public sites from mooching off your servers. I see the suggestion to "hide" the keys in an ENV file then make sure of the variables by calling some If you must have an API key or a secret to access some resource from your app, the most secure way to handle this would be to build an orchestration layer between your app and the resource. Feb 23, 2020 · I'm trying to build a node. It is crucial to understand the risks associated with exposing the apiKey and take appropriate measures to protect it. 1 day ago · If you’re an Android developer using Google Cloud Platform (GCP) services (e. They all use this $4B tool. Sep 9, 2024 · During my pentest, I leveraged the exposed API key along with a session ID intercepted from the application to enumerate users and interact with the Firestore database. Part of the leak down below; ``` 'https://firebasedynamiclinks. Given its frequent usage, a common question that arises is whether it is safe to expose this apiKey to the public. googleapis. 16 Your API keys, database URL, app id etc are meant to be public. ## Summary: The app is exposing a firebase database url that has no read/write protections. initializeApp(config) will be exposed to public, and everyone using the client side can see it in browser developer console. Mar 22, 2025 · This finding highlights the severe risks associated with exposed Firebase API keys, which can enable attackers to create accounts, reset passwords, and even delete user accounts without authorization. Jul 17, 2024 · Unfortunately, I pushed my full working folder to my GitHub repository and later on received an email from GitHub that my API keys are compromised. env file to store those values, and in my routes, using that Jul 22, 2024 · Firebase の API キーは、通常の API キーとは異なる API キーの一般的な使用方法とは異なり、Firebase サービスの API キーは、バックエンドリソースへのアクセス制御には使用されません。 Publicly exposed Firebase Database Risk: high Description Firebase is a mobile and web application development platform that provides various tools and services to developers, including a real-time database. Sep 12, 2023 · A step-by-step guide showing how to store API keys with the Google Secrets Manager, and access them securely inside 2nd-Gen Cloud Functions. By following best practices, such as keeping the apiKey confidential, implementing proper access controls, and monitoring for suspicious activity, you can Firebase API Exposed (Android) By default, the Android API Key created by Firebase can expose sensitive remote config data for your app. Aug 31, 2018 · I understand that to let a client side interacting with my firebase app, a config and firebase. But even after using it, the issue persists. mtn. Note: Your build needs to encrypt your key otherwise it will be exposed. ## Supporting Material/References: POC attached ## May 13, 2021 · A blog post I usually define my security rules using a package named @jahed/firebase-rules. com ## Steps To Reproduce: Visit https://mpulse. ## Steps To Reproduce: 1. A more detailed discussion can be found here: Is it safe to expose Firebase apiKey to the public? I'm using Google Identity Platform, not Firebase, but Google Identity Platform uses Firebase and Firebase Admin SDK too so I believe this is applicable. Jan 10, 2020 · - run: sh setEnvironment. Please see this Google Help Center article for details. Jun 12, 2019 · If this key is intended to be public (or if a publicly accessible key isn’t preventable): Log in to the Google Cloud Console and review the API and billing activity on your account, ensuring the usage is in line with what you expected. May 27, 2016 · The way Firebase works is that those API routes are called directly from clients, they're not proxied. We would like to show you a description here but the site won’t allow us. Here is how a VC Dec 6, 2022 · It states: The content of the Firebase config file or object is considered public, including the app's platform-specific ID (Apple bundle ID or Android package name) and the Firebase project-specific values, like the API Key, project ID, Realtime Database URL, and Cloud Storage bucket name. Jan 12, 2026 · Firebase uses API keys only to identify your app's Firebase project to Firebase services, and not to control access to database or Cloud Storage data, which is done using Firebase Security Rules. The application integrates both Appwrite and Firebase cloud services, each serving distinct Mar 12, 2019 · So to recapitulate, yes it’s fine to expose your Firebase API key. Steal sensitive customer data Dec 9, 2023 · “Is it safe to expose your Firebase API key?’ In short, yes. Learn real-world cases, consequences, and how to prevent them. Add API key restrictions to your API key, if applicable. - streaak/keyhacks Instead you would provide an API and use the API keys on the server to manage authentication to those third party services. sh ${{ secrets. To set it up, I am given a "reCAPTCHA Enterprise site key" which I am aske 当您将应用连接到 Firebase 时，此配置已添加到应用的代码库中。请注意，您可以使用其他机制（例如 Firebase 选项或环境变量）在应用内提供应用的 API 密钥。此外，对于 Firebase 服务的少数 REST API，您可能需要将 API 密钥的值作为查询参数显式传递到调用中。 ## Steps To Reproduce: go to : view-source:https://mpulse. Aug 3, 2025 · The Firebase API key is currently hardcoded directly into the source code and has been committed to the repository, making it publicly visible. . But I've realised that through that I would expose my firebaseConfig (on the web via inspect, and on the Github repo).

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