A Stored Cross-Site Scripting (XSS) vulnerability was found in status_filter_reload.php, a page in the pfSense software WebGUI, on Netgate pfSense version 2.4.4-p2 and earlier. The page did not encode output from the filter reload process, and a stored XSS was possible via the descr (description) parameter on NAT rules.

Netgate pfSense 2.4.4 - p2 is affected by: Cross Site Scripting (XSS). The impact is: Authenticated Stored XSS in NAT Configuration (local). The component is: Description Text box, Status/Reload Filter Page. The attack vector is: An attacker get access to the victim's session by performing the CSRF and gather the cookie and session ids or possibly can change the victims NAT configuration using this Stored XSS. This attack can possibly spoof the victim's informations.