CVE-2026-66721

published 2026-08-21

CVE-2026-66721: Missing authorization issue for domain admins in CloudStack's host tags listing functionality. Domain Admins, by default, have permission to call the…

Priority P4 12 low 2.7 CVSS 3.1

AV N AC L PR H UI N S U C L I N A N

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.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
apache	cloudstack	>= 4.12.0.0 < 4.20.3.1	4.20.3.1
apache	cloudstack	>= 4.21.0.0 < 4.22.1.1	4.22.1.1
apache_software_foundation	apache_cloudstack	4.12.0.0 – 4.20.3.0	—
apache_software_foundation	apache_cloudstack	4.21.0.0 – 4.22.1.0	—

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CWE-862