CVE-2020-20136 describes an insecure deserialization vulnerability affecting QuantConnect Lean versions 2.3.0.0 to 2.4.0.1, stemming from an insecure configuration of the TypeNameHandling property in the Json.NET library. This critical vulnerability, with a CVSS score of 9.8, allows unauthenticated attackers to execute arbitrary code remotely with high impact on confidentiality, integrity, and availability. Despite its severity, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 2.3.0.0, <= 2.4.0.1CPE matchmatch criteria | cpe:2.3:a:quantconnect:lean:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.