CVE-2026-56382
HighCVSS 7.2Exploitation Probability (EPSS)
Elevated risk52th percentile - higher than 52% of all known CVEs
Summary
Craft CMS versions from 5.5.0 to 5.9.13 contain a remote code execution vulnerability in the FieldsController::actionRenderCardPreview() method. This allows an authenticated admin user to inject Yii2 event handlers, leading to the execution of arbitrary PHP code and disclosure of sensitive information.
Risk Assessment
This vulnerability may lead to the disclosure of confidential data, such as database credentials and the CRAFT_SECURITY_KEY, posing a serious security threat to the organization.
Recommendation
It is recommended to update Craft CMS to version 5.9.14 or later to mitigate this vulnerability.
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Original NVD description (English source)
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(). An authenticated admin user can inject Yii2 event handlers (e.g., 'on init' keys) via the fieldLayoutConfig parameter to execute arbitrary PHP code and disclose sensitive information (such as environment variables containing database credentials and CRAFT_SECURITY_KEY). The issue is fixed in version 5.9.14.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS