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OpenAdvisories
Medium · 6.4 CVE-2026-14855 EUVD-2026-82644GHSA-r4ch-x8vf-xx8j

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

Published Sep 18, 2026 · Updated Oct 14, 2026 · Assigned by Wordfence

Description

The RT Mega Menu plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'css[left]' 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 and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

VendorProductAffectedFixed
themewant RT Mega Menu – Mega Menu Builder for Elementor & Gutenberg ≤ 1.5.1 —

References