CVE-2026-66721
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.
How to fix
- apache cloudstack4.20.3.1, 4.22.1.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apache cloudstack | 4.12.0.0 ≤ v < 4.20.3.1, 4.21.0.0 ≤ v < 4.22.1.1 | 4.20.3.1, 4.22.1.1 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.