Invicti identified that the target web site is using GraphQL by sending query. GraphQL is an open-source data query and manipulation language for APIs, and a runtime for fulfilling queries with existing data. It has various advantages over the classical REST API implementations and allows the granular retrieval of data, with the client deciding which data is necessary for its current purpose. It features its own distinctive query language and type system.
Detecting the GraphQL endpoint, may be used by attackers to find and exploit the vulnerabilities such as Denial of Service Attacks (DoS) and SQL Injection.
There are multiple points/ways to secure the GraphQL Enpoint. All sources shared on the Remedy References sections.