EUVD-2026-63833
GHSA-454g-wxrr-37fg
Severity by source
AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
Domain admin authentication required (PR:L); network API access (AV:N); impact limited to read-only host tag metadata disclosure (C:L); no integrity or availability impact.
Primary rating from Vendor (apache).
CVSS VectorVendor: apache
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
Missing authorization in Apache CloudStack's listHostTags API allows domain administrators to enumerate host tags across all domains in a multi-tenant deployment, violating tenant isolation boundaries established by the domain hierarchy. Affected versions span 4.12.0.0 through 4.22.1.0 across two release trains, with vendor-released patches in 4.20.3.1 and 4.22.1.1 confirmed by the Apache security advisory. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires valid domain admin credentials within a running Apache CloudStack instance - no unauthenticated access path exists. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | No CVSS score has been assigned by NVD at time of analysis, requiring independent assessment. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade Apache CloudStack to version 4.20.3.1 (for the 4.20.x train) or 4.22.1.1 (for the 4.22.x train) or any later release, as confirmed by the vendor advisory at https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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