TYPO3 CMS - Broken Access Control in Form Framework

{
  "id": "c36582a210b8fe040ed3475834cf77a451a51147e90b8b4bbde0824b18cad68d",
  "url": "https://osv.dev/vulnerability/CVE-2026-47346",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "TYPO3 CMS - Broken Access Control in Form Framework",
    "summary": "Backend users with file write permissions were able to upload form definition files with mixed-case extensions (e.g., .FORM.YAML) to bypass the Form Framework's upload restriction. Maliciously crafted form definition files can be used to execute arbitrary SQL statements, allowing attackers to escalate privileges by creating administrative backend user accounts. This issue affects TYPO3 CMS versions before 10.4.57, 11.0.0-11.5.50, 12.0.0-12.4.45, 13.0.0-13.4.30 and 14.0.0-14.3.2.",
    "evidence": "osv:CVE-2026-47346",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-47346",
      "aliases": [
        "CVE-2026-47346",
        "GHSA-hwvq-2w67-rvxp"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/typo3/typo3",
              "type": "GIT",
              "events": [
                {
                  "introduced": "fd8745e46bb11773e85524b8ee9650dabe340713"
                },
                {
                  "fixed": "59bfeaaf0136dfe17011786ce825884e48bedc8d"
                },
                {
                  "introduced": "6d6bd23afff6a48ee3efeaa68eb829820397d6a1"
                },
                {
                  "fixed": "e16ec78165a7d60f09dcac04bfbb309409e174b3"
                },
                {
                  "fixed": "2030617e6f273cee7b756c695f0a48a45a31eb47"
                },
                {
                  "fixed": "eb2b2251d90339d3ab55df3d4c0378ae0c780b45"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "13.0.0"
                      },
                      {
                        "fixed": "13.4.31"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "14.0.0"
                      },
                      {
                        "fixed": "14.3.3"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "2030617e6f273cee7b756c695f0a48a45a31eb47"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "eb2b2251d90339d3ab55df3d4c0378ae0c780b45"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v14.3.2",
            "v13.4.30",
            "v14.3.1",
            "v13.4.29",
            "v14.3.0",
            "v13.4.28",
            "v14.2.0",
            "v13.4.27",
            "v13.4.26",
            "v14.1.0",
            "v13.4.25",
            "v13.4.24",
            "v13.4.23",
            "v13.4.22",
            "v13.4.21",
            "v14.0.0",
            "v13.4.20",
            "v13.4.19",
            "v13.4.18",
            "v13.4.17",
            "v13.4.16",
            "v13.4.15",
            "v13.4.14",
            "v13.4.13",
            "v13.4.12",
            "v13.4.11",
            "v13.4.10",
            "v13.4.9",
            "v13.4.8",
            "v13.4.7",
            "v13.4.6",
            "v13.4.5",
            "v13.4.4",
            "v13.4.3",
            "v13.4.2",
            "v13.4.1",
            "v13.4.0",
            "v13.3.0",
            "v13.2.1",
            "v13.2.0",
            "v13.1.0",
            "v13.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-47346.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:33.790586305Z",
      "provider": "osv",
      "references": [
        "https://packagist.org",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47346.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-47346",
        "https://typo3.org/security/advisory/typo3-core-sa-2026-008",
        "https://github.com/TYPO3/typo3/commit/2030617e6f273cee7b756c695f0a48a45a31eb47",
        "https://github.com/TYPO3/typo3/commit/eb2b2251d90339d3ab55df3d4c0378ae0c780b45",
        "https://github.com/TYPO3/typo3"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-178",
          "CWE-862"
        ],
        "cna_assigner": "TYPO3",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "10.4.57"
                  },
                  {
                    "introduced": "11.0.0"
                  },
                  {
                    "fixed": "11.5.51"
                  },
                  {
                    "introduced": "12.0.0"
                  },
                  {
                    "fixed": "12.4.46"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47346.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-47346",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 500981,
  "published_at": "2026-06-09T10:50:21.934+00:00"
}