SiteServer CMS 3.5 background upload WEBSHELL-vulnerability warning-the black bar safety net

Version number: SiteServer CMS 3.5 Background,Upload a single GIF format Trojan. Then,through the site, file management,modify the file name,you can modify the picture Trojan horse in the format . aspx Version number: SiteServer CMS 3.5 http://demo2.siteserver.cn/siteserver/login.aspx Account:...