A cross-site scripting (XSS) vulnerability in pfsense v2.5.2 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the $pconfig variable at interfaces_groups_edit.php.
https://redmine.pfsense.org/issues/15778
https://github.com/physicszq/web_issue/blob/main/pfsense/interfaces_groups_edit_file.md_xss.md