---
id: CVE-2026-66721
title: >-
  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 w…
summary: >-
  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 w…
severity: low
cvss: 2.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-862
vendor: apache
product: cloudstack
affected:
  - 'cloudstack >= 4.12.0.0, < 4.20.3.1'
  - 'cloudstack >= 4.21.0.0, < 4.22.1.1'
patched:
  - cloudstack 4.22.1.1
published: '2026-08-21'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T15:10:00.103'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-66721'
references:
  - url: 'https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc'
    label: security@apache.org
tags:
  - nvd
epss: 0.00476
epssPercentile: 0.41256
ingestedAt: '2026-10-27T18:52:09.898Z'
---

## Overview

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

- `cloudstack >= 4.12.0.0, < 4.20.3.1`
- `cloudstack >= 4.21.0.0, < 4.22.1.1`

## Remediation

Upgrade past the affected range:

- `cloudstack 4.22.1.1`