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CVE PROGRAM SOURCE RECORD8.7 High

CVE-2026-86730

Craft CMS 5.0.0-RC1 before 5.10.12 Behavior Injection RCE

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Status
Published
Published
Updated
Assigning organization
VulnCheck

Description

Craft CMS versions before 5.10.12 fail to properly cleanse string-typed field-layout elements, allowing authenticated control-panel users to inject Yii2 behavior attachments and event handlers. Attackers can post field-layout tab elements as JSON strings to bypass cleanse validation, then trigger arbitrary object instantiation and code execution through Craft::createObject().

Affected products

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

craftcms cms

Default version status: unaffected

  • 5.0.0-RC1 to < 5.10.12affected
  • 5.10.12unaffected

References