CVE-2026-73268 is a vulnerability in Red Hat Multicluster Engine
Published on August 12, 2026
Cluster-curator-controller: cluster-curator-controller: spec.install.overridejob allows arbitrary job spec injection
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.
Vulnerability Analysis
CVE-2026-73268 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Timeline
Reported to Red Hat.
Made public. 1 day later.
Weakness Type
What is a Code Injection Vulnerability?
The software constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
CVE-2026-73268 has been classified to as a Code Injection vulnerability or weakness.
Products Associated with CVE-2026-73268
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