Understanding GraphQL Vulnerabilities

GraphQL, while powerful, presents specific vulnerabilities if not properly configured. The speaker details an incident where a web application used a shared JSON Web Token (JWT) system across multiple clients, allowing access to sensitive data beyond the intended scope. By exploiting GraphQL's introspection feature, they were able to enumerate the entire database schema and access various client data, illustrating how a small misconfiguration can lead to significant security risks. This experience highlights the importance of implementing strong security measures for GraphQL APIs to prevent unauthorized data access.