DNN has same HostGUID for all new installs

{
  "id": "6fda6754185b68f30d12640fd301d50f98cab98002d113ab65f19fe86f10f793",
  "url": "https://osv.dev/vulnerability/CVE-2026-40306",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DNN has same HostGUID for all new installs",
    "summary": "DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. All new installations of DNN 10.x.x - 10.2.1 have the same Host GUID. This does not affect upgrades from 9.x.x. Version 10.2.2 patches the issue.",
    "evidence": "osv:CVE-2026-40306",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-40306",
      "aliases": [
        "CVE-2026-40306",
        "GHSA-2rhw-gw3f-477j"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/dnnsoftware/dnn.platform",
              "type": "GIT",
              "events": [
                {
                  "introduced": "b936bda3da68c86ffe35360410c0844c15e0695d"
                },
                {
                  "fixed": "3620738b4994107135057a1a234ff15132b19732"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "10.0.0"
                      },
                      {
                        "fixed": "10.2.2"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "3620738b4994107135057a1a234ff15132b19732"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v10.2.2"
                  },
                  {
                    "cpe": "cpe:2.3:a:dnnsoftware:dotnetnuke:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "10.0.0"
                      },
                      {
                        "fixed": "10.2.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v10.2.1",
            "v10.2.0",
            "v10.1.2",
            "v10.1.1",
            "v10.1.0",
            "v10.0.1",
            "v10.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40306.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:48.576787881Z",
      "provider": "osv",
      "references": [
        "https://github.com/dnnsoftware/Dnn.Platform/releases/tag/v10.2.2",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40306.json",
        "https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-2rhw-gw3f-477j",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-40306"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-330"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40306.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-40306",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 516997,
  "published_at": "2026-04-17T21:09:30.317+00:00"
}