CVE-2026-8727 — Vulnerability intelligence
TYPO3 — Extension "Site Crawler"
Published:
- CVSS
- 7.1
- CISA KEV
- Not listed; not proof of no exploitation
Original source text (not a translation)
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.