high8.8
CVE-2026-86730
Craft CMS versions before 5.10.12 fail to properly cleanse string-typed field-layout elements, allowing authenticated control-panel users to inject Yii2 behavi…
Impact
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
| Product | Affected versions |
|---|---|
| Craft CMS | before 5.10.12 |
Versions were read from the advisory text. No structured product data has been published for this record yet.