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CVE-2026-112770— Craft CMS before 4.18.8 and 5.11.0 Authenticated RCE via Twig group Filter Array-Callable

Quick assessment

Affected
craftcms cms
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Craft CMS 4.x（4.18.8 之前版本）和 5.x（5.11.0 之前版本）中，Twig 的 group 过滤器存在一个远程代码执行漏洞。该过滤器在调用非字符串形式的箭头参数时，未使用其他接受箭头参数的过滤器所采用的 checkArrow 防护机制。已认证的控制台用户可以利用元素选择条件规则，传入如 FileHelper::writeToFile 这样的数组可调用对象，从而将 WebShell 写入网站根目录，并以 Web 服务器用户的身份执行任意代码。

CVSS 8.8 · High

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 4

VendorProduct Version RangeStatus
craftcms cms 4.0.0< 4.18.8 affected
4.18.8 unaffected
5.0.0< 5.11.0 affected
5.11.0 unaffected
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I. Basic Information for CVE-2026-112770

Vulnerability Information
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Vulnerability Title
Craft CMS before 4.18.8 and 5.11.0 Authenticated RCE via Twig group Filter Array-Callable
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
craftcms cms 4.0.0 ~ 4.18.8 -
craftcms cms 5.0.0 ~ 5.11.0 -

II. Public POCs for CVE-2026-112770

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III. Intelligence Information for CVE-2026-112770

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Vendor Advisories for CVE-2026-112770 (1)

Other References for CVE-2026-112770 (1)

Same Patch Batch · craftcms · 2026-10-19 · 8 CVEs total

CVE-2026-112776 9.8 CRITICAL Craft CMS 5.0.0 before 5.11.0 GraphQL Site-Scope Bypass via Mutations
CVE-2026-112772 8.8 HIGH Craft CMS 5.0.0 before 5.11.0 RCE via Asset::getMimeType Transform Injection
CVE-2026-112773 8.8 HIGH Craft CMS 5.0.0 before 5.11.0 RCE via Twig Sandbox Behavior Injection
CVE-2026-112775 7.5 HIGH Craft CMS 5.0.0 before 5.11.0 Verification Code Reuse via users/set-password
CVE-2026-112774 7.2 HIGH Craft CMS 5.8.0 before 5.11.0 Admin RCE via ContentBlock Field Layout
CVE-2026-112777 7.2 HIGH Craft CMS before 4.18.8 and 5.11.0 Twig create() Blocklist Bypass Leading to RCE
CVE-2026-112771 6.5 MEDIUM Craft CMS before 4.18.8 and 5.11.0 Twig Sandbox Allowlist Bypass via Array Filters

IV. Related Vulnerabilities

Same product: cms
Same vendor: craftcms
Same weakness: CWE-94

V. Comments for CVE-2026-112770

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