{"id":"CVE-2019-20800","details":"In Cherokee through 1.2.104, remote attackers can trigger an out-of-bounds write in cherokee_handler_cgi_add_env_pair in handler_cgi.c by sending many request headers, as demonstrated by a GET request with many \"Host: 127.0.0.1\" headers.","modified":"2026-04-10T04:17:13.043187Z","published":"2020-05-18T00:15:11.330Z","references":[{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202012-09"},{"type":"EVIDENCE","url":"https://logicaltrust.net/blog/2019/11/cherokee.html"},{"type":"EVIDENCE","url":"https://github.com/cherokee/webserver/issues/1224"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/cherokee/webserver","events":[{"introduced":"0"},{"last_affected":"1824487b7af0724ae42ef564b82b106c65fc0b31"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"1.2.104"}]}}],"versions":["v1.0.12","v1.0.13","v1.0.14","v1.0.15","v1.0.16","v1.0.17","v1.0.18","v1.0.21","v1.2.0","v1.2.101","v1.2.103","v1.2.103.d021376","v1.2.104","v1.2.2","v1.2.98","v1.2.99"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-20800.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}