What is CVE-2020-20136?

CVE-2020-20136 is a critical-severity vulnerability in Quantconnect Lean, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2020-12-14.

How severe is CVE-2020-20136?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Deserialization in Quantconnect Lean

CVE-2020-20136

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.

Vulnerability class: Insecure Deserialization

EPSS: 0.015 (72.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Quantconnect Lean
N/a — versions n/a

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-20136?: CVE-2020-20136 is a critical-severity vulnerability in Quantconnect Lean, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2020-12-14.
How severe is CVE-2020-20136?: Critical severity. CVSS v3 base score is 9.8 out of 10.