A reflected Cross-Site Scripting (XSS) vulnerability in the RaiseError function of Skrol29 TbsZip version 2.17 and earlier allows remote attackers to execute arbitrary web script or HTML via a crafted payload in a filename parameter (e.g., to the FileRead function). This occurs because the error message is not properly sanitized before being output to the user. This vulnerability is fixed in version 2.18.