Summary
| Parameter | Value |
|---|---|
| CVE ID | CVE-2026-66792 |
| Alert Source | GitHub Advisory - Critical Vulnerability |
| CVE Publication Year | 2026 |
| Date Published | 2026-08-17 |
| Vendor | Red Hat |
| Product | Advanced Cluster Management (multicloud-operators-subscription) |
| CVSS Score | 9.9 (critical) |
| EPSS Score | No data |
| CISA KEV | No |
| Ransomware | Not confirmed |
Vulnerability Description
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.
Required Actions
Apply vendor patches or mitigations as soon as available.
Who Is Affected?
This vulnerability affects the multicloud-operators-subscription component of Red Hat Advanced Cluster Management. Check if your organization uses this software and requires updates.
Sources
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