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

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: 2026-08-21T08:24:38.323Z

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

Link: CVE-2026-61422

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

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

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

Link: CVE-2026-61422

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-21T10:15:13Z

Weaknesses