NotificationX < 3.3.7 - Unauthenticated Non-Public Content Disclosure and Arbitrary Shortcode Execution via Notification Preview

Description

The plugin does not perform any capability, authentication or nonce check on its notification preview path, allowing unauthenticated users to disclose the content of private, draft, pending and password-protected posts and to execute arbitrary registered shortcodes by supplying crafted preview data on any front-end request.