{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "12.0.0"
              },
              {
                "fixed": "12.0.11"
              },
              {
                "introduced": "0"
              },
              {
                "fixed": "11.0.13"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "c25e671526f547f65b69adfce335834c66f54b24"
            },
            {
              "fixed": "5ab06b6f5326d6bb20dbe46e7925e9db490036bd"
            },
            {
              "introduced": "0"
            },
            {
              "fixed": "f9a1d646e88c2b18248031578758a5a938ce6c8f"
            }
          ],
          "repo": "https://github.com/tomasnorre/crawler",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "TYPO3",
    "cwe_ids": [
      "CWE-502"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8727.json"
  },
  "details": "The Crawler extension passes the X-T3Crawler-Meta response header from crawled URLs directly to PHP's unserialize(). An attacker controlling a crawled endpoint can inject arbitrary serialized PHP objects, leading to Remote Code Execution on the TYPO3 server. Exploitation requires administrative privileges to configure a crawler-enabled page and trigger the crawl via a Scheduler task.",
  "id": "CVE-2026-8727",
  "modified": "2026-07-15T01:48:52.132554811Z",
  "published": "2026-05-19T09:16:33.677Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://packagist.org/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8727.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8727"
    },
    {
      "type": "ADVISORY",
      "url": "https://typo3.org/security/advisory/typo3-ext-sa-2026-008"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/tomasnorre/crawler"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Remote Code Execution in extension \"Site Crawler\" (crawler)"
}