CVE-2026-15650: RT Mega Menu <= 1.5.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'pointer_menu_item' Block Attribute
The RT Mega Menu – Mega Menu Builder for Elementor & Gutenberg plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'pointermenuitem' Block Attribute in all versions up to, and including, 1.5.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The payload bypasses wpksespost filtering applied to post content on save because it contains no HTML tags and survives intact inside the block comment's JSON attributes, reaching the walker unescaped at render time.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
An attacker needs an authenticated WordPress account with Contributor-level permissions or higher. They can inject a malicious payload through the pointer_menu_item block attribute.
When does the injected script execute?
The script executes when a user accesses a page containing the attacker-injected block. The affected rendering path outputs the block attribute without escaping.
Does WordPress post-content filtering prevent exploitation?
No. The payload can contain no HTML tags, allowing it to survive wp_kses_post filtering when the post is saved because it is stored in the block comment JSON attributes.