PT-2026-27462 · Craft Cms · Cms

Published 2026-03-24 · Updated 2026-03-24 · CVE-2026-33157

Mitre

CVSS v4.0

8.6

High

AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Craft CMS is a content management system (CMS). From version 5.6.0 to before version 5.9.13, a Remote Code Execution (RCE) vulnerability exists in Craft CMS, it can be exploited by any authenticated user with control panel access. This is a bypass of a previous fix. The existing patches add cleanseConfig() to assembleLayoutFromPost() and various FieldsController actions to strip Yii2 behavior/event injection keys ("as" and "on" prefixed keys). However, the fieldLayouts parameter in ElementIndexesController::actionFilterHud() is passed directly to FieldLayout::createFromConfig() without any sanitization, enabling the same behavior injection attack chain. This issue has been patched in version 5.9.13.

Fix

Weakness Enumeration

CWE-470

Related Identifiers

CVE-2026-33157

Affected Products

Cms

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-33157 · Security Note
• https://github.com/craftcms/cms/security/advisories/GHSA-2fph-6v5w-89hh · Note
• https://github.com/craftcms/cms/commit/97e90b4bdee369c1af3ca77a77531132df240e4e · Note
• https://github.com/craftcms/cms/releases/tag/5.9.13 · Note