{"id":"UBUNTU-CVE-2021-22959","details":"The parser in accepts requests with a space (SP) right after the header name before the colon. This can lead to HTTP Request Smuggling (HRS) in llhttp \u003c v2.1.4 and \u003c v6.0.6.","modified":"2025-07-16T07:34:21.180817Z","published":"2021-11-15T15:15:00Z","withdrawn":"2025-07-18T16:46:39Z","upstream":["CVE-2021-22959"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-22959"},{"type":"REPORT","url":"https://nodejs.org/en/blog/vulnerability/oct-2021-security-releases/#http-request-smuggling-due-to-spaced-in-headers-medium-cve-2021-22959"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-22959"}],"affected":[{"package":{"name":"nodejs","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/nodejs@12.22.9~dfsg-1ubuntu3?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"12.22.9~dfsg-1ubuntu3"}]}],"versions":["12.22.5~dfsg-5ubuntu1","12.22.7~dfsg-2ubuntu1","12.22.7~dfsg-2ubuntu3","12.22.9~dfsg-1ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"libnode-dev","binary_version":"12.22.9~dfsg-1ubuntu3"},{"binary_name":"libnode72","binary_version":"12.22.9~dfsg-1ubuntu3"},{"binary_name":"libnode72-dbgsym","binary_version":"12.22.9~dfsg-1ubuntu3"},{"binary_name":"nodejs","binary_version":"12.22.9~dfsg-1ubuntu3"},{"binary_name":"nodejs-dbgsym","binary_version":"12.22.9~dfsg-1ubuntu3"},{"binary_name":"nodejs-doc","binary_version":"12.22.9~dfsg-1ubuntu3"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-22959.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"}]}