CVE-2026-8727Remote Code Execution in extension "Site Crawler" (crawler)
Updated under an hour ago ()
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It affects TYPO3 Extension "Site Crawler". Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.1 HIGH (v4.0, CNA)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
- Weakness (CWE)
- CWE-502
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- TYPO3
- NVD analysis
- Deferred
- Record last updated
- May 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
TYPO3 Extension "Site Crawler" typo3:extension_site_crawler (from the name) | from 12.0.0 before 12.0.11; before 11.0.13 | CNA record |
References
- https://typo3.org/security/advisory/typo3-ext-sa-2026-008vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.