CVE-2026-86730

Craft CMS versions from 5.0.0-RC1 before 5.10.12 are vulnerable to Remote Code Execution (RCE) due to improper cleansing of string-typed field-layout elements. An authenticated control-panel user can post field-layout tab elements as JSON strings to bypass cleanse validation, injecting Yii2 behav...

CVE-2026-86730 Craft CMS 5.0.0-RC1 before 5.10.12 Behavior Injection RCE

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...

EUVD-2026-72866

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...

Craft CMS: RCE via missing cleanseConfig in FieldsController::actionRenderCardPreview

The actionRenderCardPreview method in FieldsController passes the fieldLayoutConfig POST parameter directly to Fields::createLayout without calling Component::cleanseConfig. This allows Yii2 event handler injection via on eventName keys in the config array, leading to arbitrary code execution. Th...

GHSA-86VW-X4WW-X467 Craft CMS: RCE via missing cleanseConfig in FieldsController::actionRenderCardPreview

The actionRenderCardPreview method in FieldsController passes the fieldLayoutConfig POST parameter directly to Fields::createLayout without calling Component::cleanseConfig. This allows Yii2 event handler injection via on eventName keys in the config array, leading to arbitrary code execution. Th...

GHSA-PMM4-V8F6-4VPP Duplicate Advisory: Craft CMS: RCE via missing cleanseConfig in FieldsController::actionRenderCardPreview

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-86vw-x4ww-x467. This link is maintained to preserve external references. Original Description Craft CMS composer package craftcms/cms versions = 5.5.0 and = 5.9.13 contain a remote code execution vulnerability i...

CVE-2026-56382

Craft CMS composer package craftcms/cms versions = 5.5.0 and = 5.9.13 contain a remote code execution vulnerability in the FieldsController::actionRenderCardPreview method, which passes the fieldLayoutConfig POST parameter directly to Fields::createLayout without calling Component::cleanseConfig...

EUVD-2026-38176

Craft CMS composer package craftcms/cms versions = 5.5.0 and = 5.9.13 contain a remote code execution vulnerability in the FieldsController::actionRenderCardPreview method, which passes the fieldLayoutConfig POST parameter directly to Fields::createLayout without calling Component::cleanseConfig...

CVE-2026-56382

Craft CMS (composer package craftcms/cms)

CVE-2026-56382

Craft CMS composer package craftcms/cms versions = 5.5.0 and = 5.9.13 contain a remote code execution vulnerability in the FieldsController::actionRenderCardPreview method, which passes the fieldLayoutConfig POST parameter directly to Fields::createLayout without calling Component::cleanseConfig...

CVE-2026-56382 Craft CMS - Remote Code Execution via Missing Config Sanitization in FieldsController

Craft CMS composer package craftcms/cms versions = 5.5.0 and = 5.9.13 contain a remote code execution vulnerability in the FieldsController::actionRenderCardPreview method, which passes the fieldLayoutConfig POST parameter directly to Fields::createLayout without calling Component::cleanseConfig...

PT-2026-51230

Name of the Vulnerable Software and Affected Versions Craft CMS versions 5.5.0 through 5.9.13 Description An issue exists in the FieldsController::actionRenderCardPreview method where the fieldLayoutConfig POST parameter is passed directly to Fields::createLayout without being processed by...

CVE-2026-44011

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...

CVE-2026-44011 Craft CMS: Potential authenticated Remote Code Execution via malicious attached Behavior

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...

GHSA-QRGM-P9W5-RRFW Craft CMS has Potential Authenticated Remote Code Execution via Malicious Attached Behavior

We identified a vulnerability in the latest version of 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. Yii’s dynamic object configuration, as implemented in...

Craft CMS has Potential Authenticated Remote Code Execution via Malicious Attached Behavior

We identified a vulnerability in the latest version of 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. Yii’s dynamic object configuration, as implemented in...

Joomla! Security Vulnerabilities

Joomla! is a set of forum components used in the Joomla! content management system. A security vulnerability exists in Joomla! that stems from a list field layout that does not properly escape input, which can lead to a cross-site scripting XSS vulnerability...