Apache CloudStack: Authenticated pre-validation SSRF in registerTemplate

{
  "id": "cadf0edeae5e68ad534ac659db5b9832e81f265e0aba95ca5dc27158ac5f9bee",
  "url": "https://osv.dev/vulnerability/CVE-2026-61422",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Apache CloudStack: Authenticated pre-validation SSRF in registerTemplate",
    "summary": "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.",
    "evidence": "osv:CVE-2026-61422",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-61422",
      "aliases": [
        "CVE-2026-61422"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/apache/cloudstack",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c8599040b4756034c7105806a53d2c99eb7ea0fe"
                },
                {
                  "last_affected": "c8599040b4756034c7105806a53d2c99eb7ea0fe"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:apache:cloudstack:4.20.3.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.20.3.0"
                      },
                      {
                        "last_affected": "4.20.3.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.20.3.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-61422.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:41.135042707Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61422.json",
        "https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-61422"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-918"
        ],
        "cna_assigner": "apache",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "4.20.3.0"
                  },
                  {
                    "last_affected": "4.20.3.0"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandaloneSingleVersion"
              }
            ]
          },
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "4.21.0.0"
                  },
                  {
                    "last_affected": "4.22.1.0"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61422.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-61422",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 509093,
  "published_at": "2026-08-21T08:24:38.323+00:00"
}