QuantConnect Lean versions from 2.3.0.0 to 2.4.0.1 are affected by an insecure deserialization vulnerability due to insecure configuration of TypeNameHandling property in Json.NET library.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-20136
Reference (s):
- https://github.com/QuantConnect/Lean/issues/3537