Red Hat Advanced Cluster Security for Kubernetes Authenticated GraphQL API resource consumption

Summaryinfo

A vulnerability was found in Red Hat Advanced Cluster Security for Kubernetes. It has been classified as problematic. This impacts an unknown function of the component Authenticated GraphQL API. The manipulation leads to resource consumption. This vulnerability is documented as CVE-2026-9165. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Red Hat Advanced Cluster Security for Kubernetes (unknown version). It has been rated as problematic. This issue affects an unknown code block of the component Authenticated GraphQL API. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. The summary by CVE is:

A flaw was found in Red Hat Advanced Cluster Security for Kubernetes (RHACS). Central does not limit the depth of GraphQL queries served on the authenticated GraphQL API. An authenticated user with a valid API token can send deeply nested queries that cause excessive resource consumption in Central, resulting in a denial of service for the management plane.

It is possible to read the advisory at access.redhat.com. The identification of this vulnerability is CVE-2026-9165 since 05/21/2026. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/06/2026). The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Virtualization Software

Vendor

• Red Hat

Name

• Advanced Cluster Security for Kubernetes

License

• open-source

Website

• Vendor: https://www.redhat.com/

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