CVE-2020-15693: Nim-Lang Nim

Medium severity, CVSS 6.5. EPSS: 2.1% chance of exploitation in the next 30 days.

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.

Affected products

• Nim-Lang Nim: up to and including 1.2.6

Published 2020-08-14. Last modified 2026-06-17.