| Package | Affected versions | Patched versions |
|---|---|---|
| QuantConnect.Common | ≥ 2.3.0.0, ≤ 2.4.0.1 | |
| lean | ≥ 2.3.0.0, ≤ 2.4.0.1 |
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. One may avoid this issue by only running Lean in an environment where data provided is trusted.
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