{"id":"CVE-2019-20800","aliases":["EUVD-2019-11337","GHSA-jwp6-5rr6-m93v"],"status":"published","title":"In Cherokee through 1.2.104, remote attackers can trigger an out-of-bounds write in...","description":"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.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.02148,"percentile":0.82238,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2020-05-17T23:05:45Z","modified":"2026-10-20T10:50:53Z","products":[{"vendor":"cherokee-project","product":"cherokee"}],"references":[{"url":"https://logicaltrust.net/blog/2019/11/cherokee.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://github.com/cherokee/webserver/issues/1224","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://security.gentoo.org/glsa/202012-09","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-20800"},{"url":"https://github.com/advisories/GHSA-jwp6-5rr6-m93v"}],"sources":{"cve":[{"id":"CVE-2019-20800","description":"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.","status":"published","published":"2020-05-17T23:05:45Z","modified":"2024-08-05T02:53:09.169Z","updated_at":"2026-11-02T14:20:17.431882Z"}],"euvd":[{"id":"EUVD-2019-11337","description":"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.","status":"published","published":"2020-05-17T23:05:45Z","modified":"2024-08-05T02:53:09Z","updated_at":"2026-11-03T02:40:20.727542Z"}],"ghsa":[{"id":"GHSA-jwp6-5rr6-m93v","title":"In Cherokee through 1.2.104, remote attackers can trigger an out-of-bounds write in...","description":"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.","status":"published","published":"2022-05-24T17:18:01Z","modified":"2023-02-01T05:04:03Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:50:07.876412Z"}],"nvd":[{"id":"CVE-2019-20800","description":"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.","status":"published","published":"2020-05-18T00:15:11.33Z","modified":"2026-06-17T02:31:13.013Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:05:46.451008Z"}],"osv":[{"id":"CVE-2019-20800","description":"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.","status":"published","published":"2020-05-18T00:15:11.33Z","modified":"2026-10-20T10:50:53.843509104Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:12.010761Z"}]}}