Clever Mega Menu for Visual Composer <= 1.0.1 - Subscriber+ Menu Item Meta Update via save_clever_menu_item
The Clever Mega Menu for Visual Composer WordPress plugin through 1.0.1 does not perform a nonce or capability check in an AJAX action that updates navigation menu item metadata, allowing any authenticated user, including Subscribers, to overwrite menu item content and settings that are rendered in the site's public navigation.