CVE-2026-14855 RT Mega Menu <= 1.5.1 - Authenticated (Subscriber+) Stored Cross-Site Scripting via rtmega_update_menu_options AJAX Action

The RT Mega Menu plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'cssleft' parameter in all versions up to, and including, 1.5.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Subscriber-level access a...

CVE-2026-14855

The RT Mega Menu WordPress plugin (all versions up to and including 1.5.1 ) is vulnerable to Stored Cross-Site Scripting (XSS) through the css[left] parameter, processed via the rtmega_update_menu_options AJAX action. The root cause is insufficient input sanitization and output escaping . Authent...