CVE-2025-59020: Typo3/cms backend TYPO3 CMS Allows Broken Access Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-5j7q-wmh7-cqhg",
  "modified" : "2026-01-13T20:37:30Z",
  "published" : "2026-01-13T20:37:30Z",
  "aliases" : [ "CVE-2025-59020" ],
  "summary" : "TYPO3 CMS Allows Broken Access Control in Edit Document Controller",
  "details" : "### Problem\nBy exploiting the `defVals` parameter, attackers could bypass field‑level access checks during record creation in the TYPO3 backend. This gave them the ability to insert arbitrary data into prohibited exclude fields of a database table for which the user already has write permission for a reduced set of fields.\n\n### Solution\nUpdate to TYPO3 versions 10.4.55 ELTS, 11.5.49 ELTS, 12.4.41 LTS, 13.4.23 LTS, 14.0.2 that fix the problem described.\n\n### Credits\nThanks to Daniel Windloff for reporting this issue, and to TYPO3 core & security team member Benjamin Franzke for fixing it.\n\n### References\n* [TYPO3-CORE-SA-2026-001](https://typo3.org/security/advisory/typo3-core-sa-2026-001)",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-backend"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "14.0.0"
      }, {
        "fixed" : "14.0.2"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 14.0.1"
    }
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-backend"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "13.0.0"
      }, {
        "fixed" : "13.4.23"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 13.4.22"
    }
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-backend"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "12.0.0"
      }, {
        "fixed" : "12.4.41"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 12.4.40"
    }
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-backend"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "11.0.0"
      }, {
        "fixed" : "11.5.49"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 11.5.48"
    }
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-backend"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "10.0.0"
      }, {
        "fixed" : "10.4.55"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 10.4.54"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/TYPO3/typo3/security/advisories/GHSA-5j7q-wmh7-cqhg"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-59020"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/TYPO3/typo3/commit/ac3f792bd5ab7c58153fc1075cb9e001c9cebe3b"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/TYPO3/typo3/commit/cd11a19958d823d12d028f9345b41739c7e70118"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/TYPO3/typo3/commit/fb98378a8fd30dd50d89a3d1a420780819f38232"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/TYPO3/typo3"
  }, {
    "type" : "WEB",
    "url" : "https://typo3.org/security/advisory/typo3-core-sa-2026-001"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-01-13T20:37:30Z",
    "nvd_published_at" : "2026-01-13T12:15:49Z"
  }
}