---
id: CVE-2026-101919
title: A flaw was found in the HyperShift operator
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…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-20
vendor: Red Hat
product: multicluster-engine/hypershift-rhel9-operator
affected:
  - multicluster-engine/hypershift-rhel9-operator (all versions)
published: '2026-10-05'
updated: '2026-10-05'
sourceUpdated: '2026-10-05T18:17:30.907'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-101919'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-101919'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2542541'
    label: secalert@redhat.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-05T18:29:11.195Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.