CVE-2026-62440

Apache CloudStack: Improper access control in Kubernetes Service (CKS) cluster manipulation

Published Aug 21, 2026 CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Apache cloudstack
CPEs cpe:2.3:a:apache:cloudstack:*:*:*:*:*:*:*:*
Vendors & Products Apache cloudstack
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Apache
Apache apache Cloudstack
Vendors & Products Apache
Apache apache Cloudstack
Type Values Removed Values Added
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.
Title Apache CloudStack: Improper access control in Kubernetes Service (CKS) cluster manipulation
Weaknesses CWE-284
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apache
Published
Updated
Aug 25, 2026, 7:20 PM
Reserved
Jul 14, 2026, 2:34 PM
Status
Analyzed
Published
Aug 21, 2026, 9:16 AM
Modified
Oct 16, 2026, 3:10 PM