Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Thimo Grauerholz WP-Spreadplugin allows Stored XSS.This issue affects WP-Spreadplugin: from n/a through 4.8.9.

A vulnerability classified as problematic was found in Thimo Grauerholz WP-Spreadplugin up to 3.8.6.1 on WordPress. This vulnerability affects unknown code of the file spreadplugin.php. The manipulation of the argument Spreadplugin leads to cross site scripting. The attack can be initiated remotely. Upgrading to version 3.8.6.6 is able to address this issue. The name of the patch is a9b9afc641854698e80aa5dd9ababfc8e0e57d69. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-261676.