Vulnerability Database

Total number of vulnerabilities in the DB: 289,599

Microsoft.AspNetCore.WebSockets

You can search for specific versions with https://synscan.net/product/Microsoft.AspNetCore.WebSockets/1.2.3

Title	Severity	Exploit	Date	Affected Version
CVE-2019-0564	High		Jan 8, 2019	== 2.2.0 >= 2.2.0 < 2.2.1 >= 2.1.0 < 2.1.7