RoxyFileman, as shipped with nopCommerce v4.2.0, is vulnerable to ../ path traversal via d or f to Admin/RoxyFileman/ProcessRequest because of Libraries/Nop.Services/Media/RoxyFileman/FileRoxyFilemanService.cs.
nopCommerce v4.2.0 allows privilege escalation via file upload in Presentation/Nop.Web/Admin/Areas/Controllers/PluginController.cs via Admin/FacebookAuthentication/Configure because it is possible to upload a crafted Facebook Auth plugin.
Libraries/Nop.Services/Localization/LocalizationService.cs in nopCommerce through 4.10 allows XXE via the "Configurations -> Languages -> Edit Language -> Import Resources -> Upload XML file" screen.