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CVE-2026-33157 Detail

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  GitHub, Inc.
CVSS-B 8.6 HIGH
Vector:  CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/craftcms/cms/commit/97e90b4bdee369c1af3ca77a77531132df240e4e GitHub, Inc.
https://github.com/craftcms/cms/releases/tag/5.9.13 GitHub, Inc.
https://github.com/craftcms/cms/security/advisories/GHSA-2fph-6v5w-89hh GitHub, Inc.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-470 Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') GitHub, Inc.  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-33157
NVD Published Date:
03/24/2026
NVD Last Modified:
03/24/2026
Source:
GitHub, Inc.