{"id":"UBUNTU-CVE-2020-15693","details":"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.","modified":"2025-10-24T04:48:37Z","published":"2020-08-14T19:15:00Z","upstream":["CVE-2020-15693"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-15693"},{"type":"REPORT","url":"https://github.com/nim-lang/Nim/blob/dc5a40f3f39c6ea672e6dc6aca7f8118a69dda99/lib/pure/httpclient.nim#L1023"},{"type":"REPORT","url":"https://nim-lang.org/blog/2020/07/30/versions-126-and-108-released.html"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-15693"}],"affected":[{"package":{"name":"nim","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/nim@0.12.0-2?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.11.2+dfsg1-4","0.12.0-2"],"ecosystem_specific":{"binaries":[{"binary_name":"nim","binary_version":"0.12.0-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15693.json"}},{"package":{"name":"nim","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/nim@0.17.2-1ubuntu2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.17.2-1ubuntu1","0.17.2-1ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"nim","binary_version":"0.17.2-1ubuntu2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15693.json"}},{"package":{"name":"nim","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/nim@1.0.6-1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.20.2-1","1.0.2-1","1.0.3~rc-1","1.0.4-1","1.0.6-1"],"ecosystem_specific":{"binaries":[{"binary_name":"nim","binary_version":"1.0.6-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15693.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}