CVE-2026-62440

EUVD-2026-63835
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.1 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 43.37%
Affected Products (NVD)
VendorProductVersion
apachecloudstack
4.21.0.0 ≤
𝑥
< 4.22.1.1
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc