Red Hat Multicluster Global Hub multicloud-operators-subscription privileges management

Summaryinfo

A vulnerability, which was classified as very critical, has been found in Red Hat Multicluster Global Hub, Advanced Cluster Management for Kubernetes, OpenShift Container Platform and Openshift Data Foundation. Impacted is an unknown function of the component multicloud-operators-subscription. The manipulation leads to privileges management. This vulnerability is referenced as CVE-2026-66792. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in Red Hat Multicluster Global Hub, Advanced Cluster Management for Kubernetes, OpenShift Container Platform and Openshift Data Foundation (affected version unknown). This issue affects an unknown functionality of the component multicloud-operators-subscription. The manipulation with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A flaw was found in the multicloud-operators-subscription component. This vulnerability allows a user on a managed cluster to escalate their privileges by creating a Subscription with specific, crafted annotations. Successful exploitation grants the attacker the ability to deploy resources into any namespace with the elevated permissions of the controller's Service Account, potentially leading to unauthorized access and control over cluster resources.

The advisory is shared at access.redhat.com. The identification of this vulnerability is CVE-2026-66792 since 07/27/2026. The exploitation is known to be easy. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 08/17/2026). MITRE ATT&CK project uses the attack technique T1068 for this issue.

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

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Virtualization Software

Vendor

• Red Hat

Name

• Advanced Cluster Management for Kubernetes
• Multicluster Global Hub
• OpenShift Container Platform
• Openshift Data Foundation

License

• open-source

Website

• Vendor: https://www.redhat.com/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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