CVE-2021-47713: Hasura Graphql Engine

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

Hasura GraphQL 1.3.3 contains a denial of service vulnerability that allows attackers to overwhelm the service by crafting malicious GraphQL queries with excessive nested fields. Attackers can send repeated requests with extremely long query strings and multiple threads to consume server resources and potentially crash the GraphQL endpoint.

Affected products

• Hasura Graphql Engine: version 1.3.3 only

Published 2025-12-22. Last modified 2026-06-17.