VULNERABILITY INTELLIGENCE

CVE-2020-20136

CVSS score9.8 CRITICAL
EPSS probability1.54%
CISA KEVNot currently listed
Published2020-12-14
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

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.

Weakness classification

  • CWE-502: Deserialization of Untrusted Data

Primary references