The WP Ultimate Exporter plugin for WordPress can be vulnerable to a type of cyber attack known as Reflected Cross-Site Scripting. This type of attack can allow unauthenticated attackers to inject malicious code into webpages if users are tricked into performing an action, such as clicking a link, and if the plugin is running an old version (prior to 1.1). To protect against this, the plugin must ensure that all input parameters are properly sanitized and all output is properly escaped.