CVE-2026-112770

CVSS 8.8 (high) · published 2026-10-19

Craft CMS 4.x before 4.18.8 and 5.x before 5.11.0 contains a remote code execution vulnerability in the Twig group filter, which invokes non-string arrow arguments as callables without the checkArrow guard used by other arrow-accepting filters. Authenticated control panel users can pass an array-callable such as FileHelper::writeToFile via element-select condition rules to write a webshell to the webroot and execute code as the web user.

Weakness: CWE-94

Source: NVD CVE-2026-112770

References

• https://github.com/craftcms/cms/security/advisories/GHSA-xmwr-88vw-5ghh
• https://www.vulncheck.com/advisories/craft-cms-before-4.18.8-and-5.11.0-authenticated-rce-via-twig-group-filter-array-callable

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