CVE-2026-73268: Improper Control of Generation of Code ('Code Injection') in Red Hat Multicluster Engine for Kubernetes
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.
CVE-2026-73268: Improper Control of Generation of Code ('Code Injection') in Red Hat Multicluster Engine for Kubernetes
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.
CVSS v3.1
Score 9.9critical
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-08-11T17:22:38.645Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-73268","vendor":"Red Hat"}]
Threat ID: 6a7cc90bbf8831d53907731b
Added to database: 08/12/2026, 19:27:07 UTC
Last updated: 08/12/2026, 19:27:07 UTC
Views: 1
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