CVE-2020-15693

In Nim 1.2.4, the standard library httpClient is vulnerable to a CR-LF injection in the target URL. An injection is possible if the attacker controls any part of the URL provided in a call (such as httpClient.get or httpClient.post), the User-Agent header value, or custom HTTP header names or values.

Date published : 2020-08-14

https://nim-lang.org/blog/2020/07/30/versions-126-and-108-released.html

https://consensys.net/diligence/vulnerabilities/nim-httpclient-header-crlf-injection/