{"id":"CVE-2026-8727","aliases":["GHSA-jr8m-x4p7-p3v5"],"url":"https://o3.security/vulnerability/CVE-2026-8727","summary":"Remote Code Execution in extension \"Site Crawler\" (crawler)","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.","published":"2026-05-19T09:16:33.677Z","modified":"2026-08-12T03:51:43.805810253Z","cvss":null,"epss":{"score":0.0039,"percentile":0.31952,"asOf":"2026-08-12"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"tomasnorre/crawler","fixedVersion":"12.0.11"},{"ecosystem":"Packagist","name":"tomasnorre/crawler","fixedVersion":"11.0.13"}],"fix":null,"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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:43.805810253Z"}}