Vulnerability Database

Total number of vulnerabilities in the DB: 296,202

System.Text.RegularExpressions

You can search for specific versions with https://synscan.net/product/System.Text.RegularExpressions/1.2.3

Title	Severity	Exploit	Date	Affected Version
CVE-2019-0820	High		May 16, 2019	>= 4.3.0 < 4.3.1