Fork CMS Content Management System v5.8.0 was discovered to contain a cross-site scripting (XSS) vulnerability in the `Displayname` field when using the `Add`, `Edit` or `Register' functions. This vulnerability allows attackers to execute arbitrary web scripts or HTML.
Arbitrary file upload vulnerability in Fork CMS 5.9.2 allows attackers to create or replace arbitrary files in the /themes directory via a crafted zip file uploaded to the Themes panel.
Persistent Cross-site scripting vulnerability on Fork CMS version 5.8.2 allows remote attackers to inject arbitrary Javascript code via the "navigation_title" parameter and the "title" parameter in /private/en/pages/add.