graphql-and-hidden-parameters

To find undocumented fields in a GraphQL API, you perform introspection queries to map the schema and probe for hidden fields. This process identifies types, fields, and weak field-level access controls.

GraphQL introspection is a query mechanism that maps the full schema to identify types and fields. It exposes vulnerabilities by revealing undocumented fields, misconfigurations, and nested authorization gaps.

To test GraphQL batching for authorization gaps, you assess how batched requests interact with authorization and rate limits. This reveals data access issues across related objects within a single batch.

When introspection is restricted, you can still probe for hidden fields and undocumented properties by guessing field names. This approach uncovers weak auth checks and lax schema configurations.

The best way to document GraphQL authorization gaps is by recording findings with reproducible steps and concrete payload examples. This guides remediation by demonstrating exactly how sensitive data leaks.