Custom Admin Menu WordPress Plugin Reflected Cross-Site Scripting Vulnerability

A reflected cross-site scripting vulnerability has been identified in the Custom Admin Menu WordPress plugin, affecting versions through 1.0.0. The issue arises because the plugin fails to properly sanitize and escape a parameter before displaying it on the page. This vulnerability could be exploited against high-privilege users, such as administrators.

Impact

Exploitation of this vulnerability allows for reflected cross-site scripting, where an attacker can inject malicious scripts that are executed in the context of the user's browser.

Reproduction

To reproduce this vulnerability, navigate to the WordPress admin panel and access the 'adminmenu-settings' page. Include a payload, such as a script tag with an 'onload' event, in the 'msg' parameter. The injected script will be executed, demonstrating the cross-site scripting vulnerability.