ThemeMakers PayPal Express Checkout Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the ThemeMakers PayPal Express Checkout plugin for WordPress, affecting versions through 1.1.9. The issue arises from inadequate input sanitization and output escaping of user-supplied attributes in the 'paypal' shortcode. 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.

Remediation

Users can update to version 1.2.0 or a newer patched version to address this vulnerability.