CVE-2026-61422 PUBLISHED

Apache CloudStack: Authenticated pre-validation SSRF in registerTemplate

Assigner: apache
Reserved: 09.07.2026 Published: 21.08.2026 Updated: 21.08.2026

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.

Product Status

Vendor Apache Software Foundation
Product Apache CloudStack
Versions Default: unaffected
  • Version 4.20.3.0 is affected
  • affected from 4.21.0.0 to 4.22.1.0 (incl.)

Credits

  • Yuliang Xiao <xyl1509410143@outlook.com> reporter

References

Problem Types

  • CWE-918 Server-Side Request Forgery (SSRF) CWE