CVE-2026-62440

critical · 9.1

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.

9.1

CVSS

0.5%

EPSS (exploit prob.)

45th

EPSS percentile

2026-08-21

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weaknesses

CWE-284

Affected products

Vendor	Product	Affected versions
apache	cloudstack	>= 4.21.0.0, < 4.22.1.1

Check a specific version with /api/v1/cve/match.

References

https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-62440