WP Font Awesome Stored Cross-Site Scripting Vulnerability in WordPress

A stored cross-site scripting vulnerability has been identified in the WP Font Awesome plugin for WordPress, affecting versions through 1.7.9. The issue arises from inadequate input sanitization and output escaping of the 'icon' attribute in user-supplied shortcodes. This vulnerability allows authenticated attackers with contributor-level or higher permissions to inject arbitrary 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.

Reproduction

To reproduce this vulnerability, an authenticated user with contributor-level or higher permissions can create a shortcode using the 'wpfa5s', 'wpfa5r', or 'wpfa5b' attributes. By injecting a script into the 'icon' attribute of the shortcode, the script will be executed when the page is viewed.

Remediation

Users are advised to update the WP Font Awesome plugin to version 1.8.0 or later.