{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-19418",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-19418",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-11T07:29:37.478Z",
    "updatedAt": "2026-08-11T13:21:08.298Z",
    "importedAt": "2026-10-24T01:57:55.771Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "TYPO3 CMS - Broken Access Control in Backend and Install Tool",
      "summary": "The referrer enforcement introduced with TYPO3-CORE-SA-2020-006 (CVE-2020-11069) became ineffective in TYPO3 v13.0, where TYPO3 CMS started serving the backend and Install Tool applications from the site's main entry script instead of the dedicated typo3/ directory.\n\nWhether a request originated from the backend or Install Tool itself was determined by comparing the referrer against the directory of the entry script, which since then is the site root. As a consequence, requests originating from any script running on one of the TYPO3 instance's own domains, such as a frontend page, were accepted by backend routes and Install Tool endpoints.\n\nAttackers able to execute JavaScript on one of those domains, for instance by exploiting a cross-site scripting vulnerability, could invoke these endpoints via Fetch/XHR with the privileges of an authenticated victim's user session. This issue affects TYPO3 CMS versions 13.0.0-13.4.33 and 14.0.0-14.3.5.",
      "affected": [
        {
          "vendor": "TYPO3",
          "product": "TYPO3 CMS",
          "packageName": "typo3/cms-backend",
          "collectionURL": "https://packagist.org",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "13.0.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "13.4.34"
            },
            {
              "version": "14.0.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "14.3.6"
            }
          ]
        },
        {
          "vendor": "TYPO3",
          "product": "TYPO3 CMS",
          "packageName": "typo3/cms-core",
          "collectionURL": "https://packagist.org",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "13.0.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "13.4.34"
            },
            {
              "version": "14.0.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "14.3.6"
            }
          ]
        },
        {
          "vendor": "TYPO3",
          "product": "TYPO3 CMS",
          "packageName": "typo3/cms-install",
          "collectionURL": "https://packagist.org",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "14.0.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "14.3.6"
            }
          ]
        }
      ]
    }
  }
}