GraphQL-core: Denial of service via quadratic complexity in the OverlappingFieldsCanBeMerged validation rule

{
                    "vendor": "graphql-python",
                    "product": "graphql-core",
                    "versions": [
                        {
                            "version": ">= 3.0.0, < 3.2.12",
                            "status": "affected"
                        },
                        {
                            "version": ">= 3.3.0a1, < 3.3.0rc1",
                            "status": "affected"
                        }
                    ]
                }