CVE-2020-20136

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Source
https://cve.org/CVERecord?id=CVE-2020-20136
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-20136.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2020-20136
Aliases
Published
2020-12-14T19:15:12.613Z
Modified
2026-03-10T23:14:03.602586Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Git / github.com/quantconnect/lean

Affected ranges

Type
GIT
Repo
https://github.com/quantconnect/lean
Events
Introduced
629d71a3eb20112d4a4bcbd37ba2bf715c64c202
Last affected
64cf1ff870bd8670cb9a3c301258f597f51a9d8c
Database specific 
{
    "versions": [
        {
            "introduced": "2.3.0.0"
        },
        {
            "last_affected": "2.4.0.1"
        }
    ]
}

Affected versions

v2.*
v2.3.0.0
v2.3.0.2
v2.3.0.3
v2.4.0.0
v2.4.0.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-20136.json"