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CVE-2026-8727
Published: May 19, 2026
Modified: May 19, 2026
PUBLISHED
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.
| Vendor | Product | Versions |
|---|---|---|
TYPO3 | Extension "Site Crawler" | affected 12.0.0 - < 12.0.11affected 0 - < 11.0.13 |
Weaknesses (CWE)
References
https://typo3.org/security/advisory/typo3-ext-sa-2026-008
vendor-advisory
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