JavaScript Notifier WordPress Plugin Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the JavaScript Notifier plugin for WordPress, affecting all versions through 1.2.8. The issue arises from inadequate input sanitization and output escaping of user-supplied attributes in the 'wp_footer' action. This vulnerability allows authenticated attackers with administrator-level access to inject arbitrary web scripts into pages, which are executed when users access the affected pages.

Impact

Exploitation of this vulnerability allows for stored cross-site scripting, where injected scripts are executed in the context of the user viewing the page.