CVE-2026-33157

HIGH

7.2

Description

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.

CVE Details

CVSS v3.1 Score7.2

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredHIGH

User InteractionNONE

Published3/24/2026

Last Modified3/26/2026

Sourcenvd

Honeypot Sightings0

Affected Products

craftcms:craft_cms

Weaknesses (CWE)

CWE-470

References

https://github.com/craftcms/cms/commit/97e90b4bdee369c1af3ca77a77531132df240e4e(security-advisories@github.com)

https://github.com/craftcms/cms/releases/tag/5.9.13(security-advisories@github.com)

https://github.com/craftcms/cms/security/advisories/GHSA-2fph-6v5w-89hh(security-advisories@github.com)

IOC Correlations

No correlations recorded

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