using MBrace.FsPickler.Json; namespace InsecureDeserialization { public class InsecureFsPicklerDeserialization { public void FsPicklerDeserialization(string json) { try { // ruleid: insecure-fspickler-deserialization var fsPickler = FsPickler.CreateJsonSerializer(); MemoryStream memoryStream = new MemoryStream(Convert.FromBase64String(json)); fsPickler.Deserialize(memoryStream); } catch (Exception e) { Console.WriteLine(e); } } } }