CVSS 3.1
6.5 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:NCVE-2020-15693
Medium (6.5) in nim-lang nim. 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.
Severity
- EPSS
- 2.1% chance of exploitation in the next 30 days; higher than 81% of CVEs (scores of 2026-10-31)
- CWE
- CWE-74
- Published
- Modified
- Record from
- the NVD, synced
Affected
- nim-lang:nim
References
- http://www.openwall.com/lists/oss-security/2021/02/04/2
- https://consensys.net/diligence/vulnerabilities/nim-httpclient-header-crlf-injection/
- https://github.com/nim-lang/Nim/blob/dc5a40f3f39c6ea672e6dc6aca7f8118a69dda99/lib/pure/httpclient.nim#L1023
- https://nim-lang.org/blog/2020/07/30/versions-126-and-108-released.html
- http://www.openwall.com/lists/oss-security/2021/02/04/2