CVE-2026-8727 – Remote Code Execution in extension “Site Crawler” (crawler)

CVE ID :CVE-2026-8727

Published : May 19, 2026, 10:16 a.m. | 44 minutes ago

Description :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.

Severity: 7.1 | HIGH

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