Critical severity9.1NVD Advisory· Published Aug 21, 2026· Updated Aug 27, 2026
CVE-2026-62440
CVE-2026-62440
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.
Affected products
2- Range: 4.21.0.0 - 4.22.1.0
- Range: 4.21.0.0 - 4.22.1.0
Patches
Vulnerability mechanics
References
1- lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbcnvdMailing ListVendor Advisory
News mentions
1- Apache CloudStack & InLong: 25 Vulnerabilities Disclosed in Coordinated BatchVypr Intelligence · Aug 21, 2026