CVE Catalog

CVE-2026-101919

HighCVSS 8.8
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.42%

35th percentile - higher than 35% of all known CVEs

Summary

A flaw was found in the HyperShift operator. The operator copies user-provided Kubernetes configuration (kubeconfig) secrets directly into the privileged control plane namespace without proper validation or sanitization. An authenticated user with cluster and secret creation permissions can exploit this vulnerability by supplying a configuration containing unauthorized executable plugins. When downstream controllers consume this configuration, an attacker can achieve arbitrary code execution within the control plane.

Risk Assessment

The risk includes the possibility of arbitrary code execution in the control plane, which can lead to full compromise of the Kubernetes cluster and integrity of the entire environment.

Recommendation

It is recommended to immediately upgrade the HyperShift operator to a patched version and implement validation and sanitization of kubeconfig configurations before copying them into the privileged namespace.

Related vulnerabilities

Original NVD description (English source)

A flaw was found in the HyperShift operator. The operator copies user-provided Kubernetes configuration (kubeconfig) secrets directly into the privileged control plane namespace without proper validation or sanitization. An authenticated user with cluster and secret creation permissions can exploit this vulnerability by supplying a configuration containing unauthorized executable plugins. When downstream controllers consume this configuration, an attacker can achieve arbitrary code execution within the control plane.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS