Authenticated pre-validation SSRF vulnerability in Apache CloudStack's template and ISO registration functionality.

When registering a template or ISO, CloudStack makes a live HTTP HEAD/GET call to determine file size for secondary storage usage-limit checks, and this happens before URL validation is performed. However, this does not pose a malicious template or ISO registration risk, as URL validation still occurs prior to the actual download by the Secondary Storage VM.This issue affects Apache CloudStack: in 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.

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History

Thu, 27 Aug 2026 14:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:apache:cloudstack:*:*:*:*:*:*:*:*
cpe:2.3:a:apache:cloudstack:4.20.3.0:*:*:*:*:*:*:*

Mon, 24 Aug 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 24 Aug 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}


Fri, 21 Aug 2026 10:00:00 +0000

Type Values Removed Values Added
First Time appeared Apache
Apache cloudstack
Vendors & Products Apache
Apache cloudstack

Fri, 21 Aug 2026 08:45:00 +0000

Type Values Removed Values Added
Description Authenticated pre-validation SSRF vulnerability in Apache CloudStack's template and ISO registration functionality. When registering a template or ISO, CloudStack makes a live HTTP HEAD/GET call to determine file size for secondary storage usage-limit checks, and this happens before URL validation is performed. However, this does not pose a malicious template or ISO registration risk, as URL validation still occurs prior to the actual download by the Secondary Storage VM.This issue affects Apache CloudStack: in 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.
Title Apache CloudStack: Authenticated pre-validation SSRF in registerTemplate
Weaknesses CWE-918
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2026-08-24T17:03:52.112Z

Reserved: 2026-07-09T11:34:27.649Z

Link: CVE-2026-61422

cve-icon Vulnrichment

Updated: 2026-08-24T17:03:44.314Z

cve-icon NVD

Status : Analyzed

Published: 2026-08-21T09:16:39.840

Modified: 2026-08-27T14:37:55.040

Link: CVE-2026-61422

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-24T21:15:07Z

Weaknesses