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CVE-2026-66721 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: CISA-ADPCVSS-B:2.7 LOWVector:CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc	[email protected]	Mailing ListVendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-862	Missing Authorization	[email protected]

Affected Products

Product	Versions
apache cloudstack	>= 4.12.0.0, < 4.20.3.1 >= 4.21.0.0, < 4.22.1.1
CPE cpe:2.3:a:apache:cloudstack:::::::: Remediation No remediation found in references.

Change History

3 change records found show changes

Date	Action	Recorded By
Aug 27, 2026	Initial Analysis	[email protected]
Aug 24, 2026	CVE Modified	CISA-ADP
Aug 21, 2026	New CVE Received	[email protected]