GFI MailEssentials AI Stored Cross-Site Scripting Vulnerability in IP DNS Blocklist Configuration Page

A stored cross-site scripting vulnerability has been identified in GFI MailEssentials AI versions prior to 22.4. The issue resides in the IP DNS Blocklist configuration page, where an authenticated user can inject HTML or JavaScript into the 'ctl00$ContentPlaceHolder1$pv1$TXB_IPs' parameter. This injected script is stored and subsequently rendered in the management interface, enabling script execution in the context of the logged-in user.

Impact

Exploitation of this vulnerability allows for stored cross-site scripting, where injected scripts are executed in the context of the user viewing the management interface.