---
id: CVE-2026-112770
title: >-
  Craft CMS before 4.18.8 and 5.11.0 Authenticated RCE via Twig group Filter
  Array-Callable
summary: >-
  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 f…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-94
vendor: craftcms
product: cms
affected:
  - cms >= 4.0.0 < 4.18.8
  - cms >= 5.0.0 < 5.11.0
published: '2026-10-19'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T19:10:49.743Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-112770'
references:
  - url: 'https://github.com/craftcms/cms/security/advisories/GHSA-xmwr-88vw-5ghh'
    label: GitHub Security Advisory (GHSA-xmwr-88vw-5ghh)
  - url: >-
      https://www.vulncheck.com/advisories/craft-cms-before-4.18.8-and-5.11.0-authenticated-rce-via-twig-group-filter-array-callable
    label: >-
      VulnCheck Advisory: Craft CMS before 4.18.8 and 5.11.0 Authenticated RCE
      via Twig group Filter Array-Callable
tags:
  - cve.org
ingestedAt: '2026-10-19T19:38:06.464Z'
---

## Overview

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.

## Affected

- `cms >= 4.0.0 < 4.18.8`
- `cms >= 5.0.0 < 5.11.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.