A vulnerability was found in efwGrp efw4.X up to 4.08.9 . It has been declared as problematic . Affected by this vulnerability is an unknown functionality of the component File Extension Handler . Executing a manipulation can lead to basic cross site scripting. This vulnerability appears as CVE-2026-44259 . The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.