<PackageReference Include="System.Security.Permissions" Version="10.0.0-preview.1.25080.5" />

MediaPermissionImage

public enum MediaPermissionImage
Specifies the permission level for images.
namespace System.Security.Permissions { [Obsolete("Code Access Security is not supported or honored by the runtime.", DiagnosticId = "SYSLIB0003", UrlFormat = "https://aka.ms/dotnet-warnings/{0}")] public enum MediaPermissionImage { NoImage, SiteOfOriginImage, SafeImage, AllImage } }