Spring for GraphQL's Spring Data pagination support resolves arguments of a scrollable query and forwards the client-supplied values to the underlying repository. An attacker can forge a malicious query for a Connection field that can exhaust application memory or place significant, prolonged load on the underlying datastore, resulting in a Denial of Service.

More precisely, an application is vulnerable when all the following are true:

• the application exposes a Connection-typed Query field backed by a Spring Data repository through the auto-registration support (for example QueryByExampleDataFetcher or QuerydslDataFetcher)
• the application does not enforce additional query complexity checks