CVE-2026-66792

Summary

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.

Affected Software

VendorProductVersion RangeStatus
Red HatMulticluster Global Hub 1.4.91788355439 < *unaffected
Red HatMulticluster Global Hub 1.4.91788355599 < *unaffected
Red HatMulticluster Global Hub 1.4.91788355417 < *unaffected
Red HatMulticluster Global Hub 1.5.81789515408 < *unaffected
Red HatMulticluster Global Hub 1.5.81789515288 < *unaffected
Red HatMulticluster Global Hub 1.5.81789478830 < *unaffected
Red HatMulticluster Global Hub 1.6.61790085494 < *unaffected
Red HatMulticluster Global Hub 1.6.61790086176 < *unaffected
Red HatMulticluster Global Hub 1.6.61790085268 < *unaffected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.111787262214 < *unaffected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.111787263584 < *unaffected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.131787259284 < *unaffected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.131787263693 < *unaffected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.141786976940 < *unaffected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.141787170830 < *unaffected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.151787238598 < *unaffected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.151787240030 < *unaffected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.161787242135 < *unaffected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.161787242321 < *unaffected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.171787242131 < *unaffected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.171787242108 < *unaffected

Weaknesses

  • CWE-863: Incorrect Authorization

Workarounds

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

References