An Unrestricted Upload vulnerability, due to insufficient validation on UploadControlled.cs file, in BlogEngine.Net version 3.3.8.0 and earlier allows remote attackers to execute remote code.
BlogEngine.NET 3.3.7.0 and earlier allows Directory Traversal and Remote Code Execution via the theme cookie to the File Manager. NOTE: this issue exists because of an incomplete fix for CVE-2019-6714.