---
id: CVE-2026-115938
title: >-
  Low privilege condition filter escapes Twig sandbox, recovers "securityKey"
  and reaches RCE
summary: "Craft CMS allows any authenticated control panel user to submit an element-search condition whose element selector is evaluated as a sandboxed Twig object template. Craft’s allowed\_column\_filter delegates property lookup to Yii\_ArrayHelp…"
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-1336
vendor: craftcms
product: craftcms/cms
affected:
  - craftcms/cms >= 5.0.0 < 5.11.2
  - craftcms/cms >= 4.0.0 < 4.18.9
published: '2026-10-23'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T21:58:51.816Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-115938'
references:
  - url: 'https://www.hckrt.com/hacktivity/HCKRT-DRNL9W'
  - url: 'https://github.com/craftcms/cms/releases/tag/5.11.2'
  - url: 'https://github.com/craftcms/cms'
  - url: 'https://github.com/craftcms/cms/security/advisories/GHSA-v4q3-2g5g-wjj6'
tags:
  - cve.org
ingestedAt: '2026-10-24T00:46:53.879Z'
---

## Overview

Craft CMS allows any authenticated control panel user to submit an element-search condition whose element selector is evaluated as a sandboxed Twig object template. Craft’s allowed column filter delegates property lookup to Yii ArrayHelper, outside Twig’s SecurityPolicy. Repeated single-segment lookups therefore bypass the sandbox’s empty property/method allowlists.



The vulnerable condition value is ultimately cast to an integer. That does not protect the secret: the template can return author ID 1 when a guessed key character is correct and an impossible ID otherwise. The JSON endpoint returns entries for the first case and an empty array for the second, forming a stable remote character oracle.



After recovering GeneralConfig::securityKey, the same user can compute Craft’s generic HMAC wire format offline. Signed parameters such as redirect are then accepted and passed to unsandboxed View::renderObjectTemplate(), where Twig’s string-callable form can invoke native PHP callables. The regression proof uses the harmless substr() callback and observes abcdef becoming cdef; it does not execute an OS command.

## Affected

- `craftcms/cms >= 5.0.0 < 5.11.2`
- `craftcms/cms >= 4.0.0 < 4.18.9`

## Remediation

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