Umbraco Allows Improper API Access Control to Low-Privilege Users to Data Type Functionality

{
  "id": "1ba8bac734c0fe189d02ad7d278f8f0fec3d828b95c7df90516630beb3cf8506",
  "url": "https://osv.dev/vulnerability/CVE-2025-27601",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Umbraco Allows Improper API Access Control to Low-Privilege Users to Data Type Functionality",
    "summary": "Umbraco is a free and open source .NET content management system. An improper API access control issue has been identified Umbraco's API management package prior to versions 15.2.3 and 14.3.3, allowing low-privilege, authenticated users to create and update data type information that should be restricted to users with access to the settings section. The issue is patched in versions 15.2.3 and 14.3.3. No known workarounds are available.",
    "evidence": "osv:CVE-2025-27601",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2025-27601",
      "aliases": [
        "CVE-2025-27601",
        "GHSA-6ffg-mjg7-585x"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/umbraco/umbraco-cms",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "d9fb6df16e9adf8656181cac8497fc5ba23321cd"
                },
                {
                  "introduced": "76ed1707537e8f0dcf13ae7a84d2af60d1aa1816"
                },
                {
                  "fixed": "ebb6a580dc1da2c772a99838dc7b4660bf77eb9c"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:umbraco:umbraco_cms:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "14.3.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:umbraco:umbraco_cms:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "15.0.0"
                      },
                      {
                        "fixed": "15.2.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "d9fb6df16e9adf8656181cac8497fc5ba23321cd"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "ebb6a580dc1da2c772a99838dc7b4660bf77eb9c"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "release-14.3.2",
            "release-15.2.2",
            "release-15.2.1",
            "release-15.2.0",
            "release-15.2.0-rc",
            "release-14.3.1",
            "release-14.3.0",
            "release-14.3.0-rc",
            "release-14.0.0--preview006",
            "v14.0.0--preview005",
            "release-14.0.0--preview005",
            "release-14.0.0--preview004",
            "release-11.0.0-rc1",
            "release-10.0.0-rc1",
            "release-9.0.0",
            "release-9.0.0-rc004",
            "release-9.0.0-rc003",
            "release-9.0.0-rc002",
            "release-9.0.0-beta004",
            "release-9.0.0-beta003",
            "release-9.0.0-beta002",
            "release-9.0.0-beta001",
            "release-netcore-alpha004",
            "release-netcore-alpha002",
            "release-netcore-0.5.0-alpha001",
            "release-7.2.0-beta2",
            "release-7.2.0-beta",
            "release-7.1.4",
            "release-7.2.0-alpha",
            "release-7.1.3",
            "release-7.1.2",
            "release-7.1.1",
            "release-7.1.0",
            "release-7.1.0-RC",
            "release-7.0.0",
            "release-7.0.0-RC",
            "release-7.0.0-beta",
            "release-6.1.0-beta",
            "4.7.2",
            "Release-4.6.0",
            "Sprint-Juno-A",
            "Release-4.5.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-27601.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:23.379099637Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/27xxx/CVE-2025-27601.json",
        "https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-6ffg-mjg7-585x",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-27601",
        "https://github.com/umbraco/Umbraco-CMS/commit/d9fb6df16e9adf8656181cac8497fc5ba23321cd",
        "https://github.com/umbraco/Umbraco-CMS/commit/ebb6a580dc1da2c772a99838dc7b4660bf77eb9c"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-285",
          "CWE-863"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/27xxx/CVE-2025-27601.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-27601",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 489472,
  "published_at": "2025-03-11T15:30:09.761+00:00"
}