Vulnerability Description
Missing authorization issue for domain admins in CloudStack's host tags listing functionality. Domain Admins, by default, have permission to call the listHostTags API, but the API returns host tags for every host in the environment without domain scoping. It should instead be restricted to only the hosts dedicated to that admin's domain. This issue affects Apache CloudStack: from 4.12.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0. Users are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-66721?
CVE-2026-66721 is a documented vulnerability. Missing authorization issue for domain admins in CloudStack's host tags listing functionality. Domain Admins, by default, have permission to call the listHostTags API, but the API returns host tag...
How severe is CVE-2026-66721?
CVSS scoring is not yet available for CVE-2026-66721. Check NVD for updates.
Is there a patch for CVE-2026-66721?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.