VDB
CVE-2026-62440
CVE-2026-62440
PUBLISHED
CVSS 9.1 CRITICAL
Reported by apache · Published August 21, 2026
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.
Risk Scores
CVSS 3.1
9.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache CloudStack | 4.21.0.0 |
| Apache Software Foundation | Apache CloudStack | 4.21.0.0, 4.21.0.0 |
Timeline
- Aug 21, 2026 EPSS Score
- Aug 21, 2026 CVE Published
- Aug 22, 2026 Coalition ESS Score
- Aug 24, 2026 EPSS Score
- Aug 26, 2026 EPSS Score
- Aug 27, 2026 CVE Updated
- Aug 28, 2026 EPSS Score
- Sep 3, 2026 EPSS Score
- Sep 3, 2026 Security Advisory