The Zebra_Form library, found in some plugins for the website software WordPress, is vulnerable to an attack called Reflected Cross-Site Scripting. This attack can be used by unauthenticated attackers to inject malicious code in web pages that can be executed if the user can be tricked into clicking a link or performing an action. The vulnerability exists in versions of the library up to and including version 2.9.8 due to insufficient sanitization of user input and lack of escaping of output.