Introduction

GraphQL APIs have become widely adopted due to their flexibility, but misconfigurations can expose sensitive data to unauthorized users. Attackers and bug bounty hunters often leverage GraphQL queries to extract:

🔎 Hidden API endpoints
🔎 User emails and credentials
🔎 Internal system data
🔎 Private reports and security information

In this article, we’ll explore practical techniques for extracting juicy information from GraphQL APIs, how attackers abuse these vulnerabilities, and how to harden your GraphQL endpoints against exploitation.

1️⃣ Finding Exposed GraphQL Endpoints

Before extracting sensitive data, you first need to locate the GraphQL endpoint. Common naming conventions for GraphQL APIs include:

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