{"schema_version": "1.6.1", "id": "CVE-2026-61422", "summary": "Authenticated pre-validation SSRF in registerTemplate", "details": "Authenticated pre-validation SSRF vulnerability in Apache CloudStack's template and ISO registration functionality.\n\nWhen 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.\n\nUsers are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.", "affected": [{"ranges": [{"type": "SEMVER", "events": [{"introduced": "4.20.3.0"}, {"last_affected": "4.20.3.0"}]}, {"type": "SEMVER", "events": [{"introduced": "4.21.0.0"}, {"last_affected": "4.21.0.0"}]}]}], "references": [{"type": "WEB", "url": "https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc"}]}