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CVE PROGRAM SOURCE RECORD8.6 High

CVE-2026-44011

Craft CMS: Potential authenticated Remote Code Execution via malicious attached Behavior

Description

Craft CMS is a content management system (CMS). From 4.0.0 to before 4.17.12 and 5.9.18, Craft CMS which contains an input-handling flaw in a Yii object creation path that let any authenticated user inject malicious configuration and execute arbitrary commands on the server. The request-controlled condition field layouts data is converted into a live FieldLayout object without a Component::cleanseConfig() boundary. Because Craft configures models before parent::__construct(), attacker-controlled special config keys can take effect during object creation, and FieldLayout initialization then triggers a same-request event. This vulnerability is fixed in 4.17.12 and 5.9.18.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

craftcms cms

  • >= 4.0.0, < 4.17.12affected
  • >= 5.0.0, < 5.9.18affected

References