CVE-2026-66721: CWE-862 Missing Authorization in Apache Software Foundation Apache CloudStack
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.
AI Analysis
Technical Summary
CVE-2026-66721 is a missing authorization vulnerability (CWE-862) in Apache CloudStack's listHostTags API. Domain Admins have permission to call this API by default, but the API does not restrict the returned host tags to the admin's domain, exposing host tag information from all hosts in the environment. This affects Apache CloudStack versions from 4.12.0.0 through 4.20.3.0 and 4.21.0.0 through 4.22.1.0. The issue is resolved in versions 4.20.3.1 and 4.22.1.1 or later.
Potential Impact
Unauthorized disclosure of host tag information across domains within the CloudStack environment. Domain Admins can access host tags beyond their authorized domain scope, potentially exposing sensitive environment details. There is no indication of active exploitation in the wild.
Mitigation Recommendations
Upgrade Apache CloudStack to version 4.20.3.1 or 4.22.1.1 or later, where this authorization issue is fixed. No other mitigations are specified.
CVE-2026-66721: CWE-862 Missing Authorization in Apache Software Foundation Apache CloudStack
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.
Affected software
pkg:maven/org.apache.cloudstack/cloudstackRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-66721 is a missing authorization vulnerability (CWE-862) in Apache CloudStack's listHostTags API. Domain Admins have permission to call this API by default, but the API does not restrict the returned host tags to the admin's domain, exposing host tag information from all hosts in the environment. This affects Apache CloudStack versions from 4.12.0.0 through 4.20.3.0 and 4.21.0.0 through 4.22.1.0. The issue is resolved in versions 4.20.3.1 and 4.22.1.1 or later.
Potential Impact
Unauthorized disclosure of host tag information across domains within the CloudStack environment. Domain Admins can access host tags beyond their authorized domain scope, potentially exposing sensitive environment details. There is no indication of active exploitation in the wild.
Mitigation Recommendations
Upgrade Apache CloudStack to version 4.20.3.1 or 4.22.1.1 or later, where this authorization issue is fixed. No other mitigations are specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-07-27T15:02:58.111Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a88309facd9273b4907b8ab
Added to database: 08/21/2026, 11:03:59 UTC
Last enriched: 08/21/2026, 11:07:36 UTC
Last updated: 08/21/2026, 22:52:14 UTC
Views: 6
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