Graphql

Complete API Security Resource Center Every API security guide on the site: REST and GraphQL testing, authentication and authorization, and the OWASP API Top 10. 🚀 Core API Vulnerability Prevention API Attack Surface Security API Security Guide OWASP API Top 10, 2026 GraphQL vulnerabilities, AI/MCP risks, comprehensive testing Rate limiting, authentication bypasses, API gateway hardening GraphQL Security Guide Injection techniques, authorization bypasses, introspection attacks Batching, DoS, subscriptions, engine-specific exploitation Modern API Protocols JWT Security Guide Algorithm confusion attacks, signature bypasses, library-specific exploits Token security, cryptographic attacks, secure implementation 🔐 API Authentication & Access Control Authentication Systems Authentication Guide ...

Comprehensive GraphQL Security Guide 🆕 Updated September 12, 2026 — added an airline GraphQL BOLA case study: sequential IDs, resolver-level authorization gaps, and why introspection removes the grace period. A practitioner’s reference for attacking and defending GraphQL APIs — discovery, introspection, schema recovery, injection, authorization flaws, batching, DoS, subscriptions, CSRF/CSWSH, engine-specific quirks, and detection/prevention. Table of Contents Fundamentals Discovery & Fingerprinting Introspection Schema Recovery Without Introspection Query & Data Extraction Mutations & Mass Assignment Authorization Flaws (BOLA / BFLA / IDOR) Injection Through GraphQL Batching Attacks & Aliases Denial of Service CSRF & CSWSH Subscriptions & WebSockets Engine-Specific Notes (Apollo, Hasura, graphql-java, async-graphql, Mercurius) Notable CVEs & Real-World Chains Tooling Detection & Prevention Payload Quick Reference 1. Fundamentals GraphQL is a query language and server runtime for APIs, originally developed at Facebook and open-sourced in 2015. Instead of the multiple fixed endpoints of a REST API, a GraphQL service exposes a single endpoint that accepts typed queries and returns exactly the fields the client asks for. ...