CVE-2026-62440
Received Received - Intake

Improper Access Control in Apache CloudStack Kubernetes Service Plugin

Publication date: 2026-08-21

Last updated on: 2026-08-21

Assigner: Apache Software Foundation

Description
Improper Access Control vulnerability in Apache CloudStack's Kubernetes Service (CKS) plugin, allowing cross-tenant manipulation of the Kubernetes cluster while adding and removing nodes. This issue affects Apache CloudStack: from 4.21.0.0 through 4.22.1.0. Users are recommended to upgrade to version 4.22.1.1 or later, which fixes the issue.

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Meta Information

Published
2026-08-21
Last Modified
2026-08-21
Generated
2026-08-21
AI Q&A
2026-08-21
EPSS Evaluated
N/A
NVD
CVE-2026-62440
EUVD
EUVD-2026-63835

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
apache cloudstack From 4.21.0.0 (inc) to 4.22.1.0 (inc)
apache cloudstack From 4.22.1.1 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-284 The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Attack-Flow Graph

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Executive Summary

This is an Improper Access Control vulnerability in Apache CloudStack's Kubernetes Service (CKS) plugin. It allows a user from one tenant to manipulate the Kubernetes cluster by adding or removing nodes, which should only be possible for authorized users within their own tenant.

Impact Analysis

If you use Apache CloudStack with the CKS plugin versions 4.21.0.0 through 4.22.1.0, an attacker could gain unauthorized control over your Kubernetes cluster nodes. This could lead to data breaches, service disruption, or unauthorized access to other tenants' resources.

Compliance Impact

This vulnerability could violate compliance requirements such as GDPR (data protection) or HIPAA (health data security) by allowing unauthorized access to sensitive data or systems. Proper access controls are critical for maintaining regulatory compliance.

Mitigation Strategies

Upgrade Apache CloudStack to version 4.22.1.1 or later to fix the improper access control in the CKS plugin.

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