Vulnerability Details CVE-2026-61422
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 5.7%
CVSS Severity
CVSS v3 Score 4.3
Products affected by CVE-2026-61422
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cpe:2.3:a:apache:cloudstack:4.20.3.0
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cpe:2.3:a:apache:cloudstack:4.21.0.0
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cpe:2.3:a:apache:cloudstack:4.22.0.0
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cpe:2.3:a:apache:cloudstack:4.22.0.1
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cpe:2.3:a:apache:cloudstack:4.22.1.0