CVE-2026-73268
Last modified
CVE-2026-73268 is a critical-severity vulnerability rated 9.9/10 on the CVSS scale. A flaw was found in the cluster-curator-controller component of multicluster engine (MCE). A tenant with create or update permissions on ClusterCurator resources can inject an arbitrary Job specification. EPSS estimates a 0.47% chance of exploitation in the next 30 days.
Description
A flaw was found in the cluster-curator-controller component of multicluster engine (MCE). A tenant with create or update permissions on ClusterCurator resources can inject an arbitrary Job specification. This is possible because the CreateJob() function does not validate user-controlled input when unmarshaling the spec.install.overrideJob raw extension. Successful exploitation allows the injected Job to run with the controller's elevated privileges, leading to arbitrary code execution and privilege escalation, potentially accessing cluster-wide secrets.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | multicluster engine for Kubernetes 2.1 | All versions |
| Red Hat | multicluster engine for Kubernetes 2.11 | All versions |
| Red Hat | multicluster engine for Kubernetes 2.17 | All versions |
| Red Hat | multicluster engine for Kubernetes 2.6 | All versions |
| Red Hat | multicluster engine for Kubernetes 2.8 | All versions |
| Red Hat | multicluster engine for Kubernetes 2.9 | All versions |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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