---
id: CVE-2026-112774
title: Craft CMS 5.8.0 before 5.11.0 Admin RCE via ContentBlock Field Layout
summary: >-
  Craft CMS from 5.8.0 before 5.11.0 contains a remote code execution
  vulnerability that allows authenticated administrators to inject Yii behaviors
  by supplying a JSON-string field layout to ContentBlock::setFieldLayout().
  Attackers with …
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-94
vendor: craftcms
product: cms
affected:
  - cms >= 5.8.0 < 5.11.0
published: '2026-10-19'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T19:10:52.576Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-112774'
references:
  - url: 'https://github.com/craftcms/cms/security/advisories/GHSA-j6r9-fxgv-j7x5'
    label: GitHub Security Advisory (GHSA-j6r9-fxgv-j7x5)
  - url: >-
      https://www.vulncheck.com/advisories/craft-cms-5.8.0-before-5.11.0-admin-rce-via-contentblock-field-layout
    label: >-
      VulnCheck Advisory: Craft CMS 5.8.0 before 5.11.0 Admin RCE via
      ContentBlock Field Layout
tags:
  - cve.org
ingestedAt: '2026-10-19T19:38:06.463Z'
---

## Overview

Craft CMS from 5.8.0 before 5.11.0 contains a remote code execution vulnerability that allows authenticated administrators to inject Yii behaviors by supplying a JSON-string field layout to ContentBlock::setFieldLayout(). Attackers with allowAdminChanges enabled can include 'as X' or 'on X' keys that bypass cleanseConfig() to execute OS commands as the web user and disclose secrets.

## Affected

- `cms >= 5.8.0 < 5.11.0`

## Remediation

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