GHSA-P46M-G734-VPC4 cakephp/debug_kit: MailPreview contains unsafe reflection

Impact The MailPreview feature of debugkit is vulnerable to arbitrary constructor execution. For an application to be vulnerable the following conditions must be true: 1. debug mode must be enabled. 2. The hostname must match a 'local' domain or be in an allowlist. Patches 5.2.4 and 4.10.3 contai...

EUVD-2026-66597

DebugKit provides a debugging toolbar for CakePHP applications. Prior to 4.10.3 and 5.2.4, the DebugKit MailPreview feature in src/Controller/MailPreviewController.php accepts a route-controlled previewName value in findPreview and passes the resolved class from App::className to constructor...