CVE-2026-33157

HIGH EPSS 59.1%
Published Mar 24, 20263mo ago · Modified Jun 17, 20261w ago
8.6 CVSS 4.0
High
Find Similar
Published Mar 24, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
8.6
Exploitability
—
Impact
—
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required High
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
59.1% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-470

Affected Products 1

VendorProductVersionRange
craftcmscraft_cms*≥5.6.0  –  <5.9.13

References 3

  • github.com https://github.com/craftcms/cms/commit/97e90b4bdee369c1af3ca77a77531132df240e4e
    Patch
  • github.com https://github.com/craftcms/cms/releases/tag/5.9.13
    Release Notes
  • github.com https://github.com/craftcms/cms/security/advisories/GHSA-2fph-6v5w-89hh
    ExploitVendor Advisory

Remediation

  • github.com https://github.com/craftcms/cms/commit/97e90b4bdee369c1af3ca77a77531132df240e4e
    Patch