{"id":"CVE-2018-1000164","aliases":["DEBIAN-CVE-2018-1000164","DLA-1357-1","DSA-4186-1","EUVD-2018-0076","GHSA-32pc-xphx-q4f6","PYSEC-2018-55","UBUNTU-CVE-2018-1000164","USN-4022-1"],"status":"published","title":"Gunicorn contains Improper Neutralization of CRLF sequences in HTTP headers","description":"gunicorn version 19.4.5 contains a CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers vulnerability in \"process_headers\" function in \"gunicorn/http/wsgi.py\" that can result in an attacker causing the server to return arbitrary HTTP headers. 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Party Advisory","evidence","web","report"]},{"url":"https://lists.debian.org/debian-lts-announce/2018/04/msg00022.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://github.com/benoitc/gunicorn/issues/1227","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Third Party Advisory","report","web"]},{"url":"https://www.debian.org/security/2018/dsa-4186","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://usn.ubuntu.com/4022-1/","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-1000164","tags":["advisory"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/gunicorn/PYSEC-2018-55.yaml","tags":["web"]},{"url":"https://usn.ubuntu.com/4022-1","tags":["web"]},{"url":"https://github.com/benoitc/gunicorn/commit/1e10a02e73c87dfadc394b361af33864d0e59e24","tags":["web"]},{"url":"https://github.com/advisories/GHSA-32pc-xphx-q4f6","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2018-1000164","tags":["advisory"]},{"url":"https://github.com/benoitc/gunicorn","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2018-1000164","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-4022-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-1000164","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2018-1000164","description":"gunicorn version 19.4.5 contains a CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers vulnerability in \"process_headers\" function in \"gunicorn/http/wsgi.py\" that can result in an attacker causing the server to return arbitrary HTTP headers. This vulnerability appears to have been fixed in 19.5.0.","status":"published","published":"2018-04-18T19:00:00Z","modified":"2024-08-05T12:33:49.4Z","updated_at":"2026-11-02T14:35:10.685174Z"}],"euvd":[{"id":"EUVD-2018-0076","description":"gunicorn version 19.4.5 contains a CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers vulnerability in \"process_headers\" function in \"gunicorn/http/wsgi.py\" that can result in an attacker causing the server to return arbitrary HTTP headers. This vulnerability appears to have been fixed in 19.5.0.","status":"published","published":"2018-04-18T19:00:00Z","modified":"2024-08-05T12:33:49Z","updated_at":"2026-11-03T02:39:26.824954Z"}],"ghsa":[{"id":"GHSA-32pc-xphx-q4f6","title":"Gunicorn contains Improper Neutralization of CRLF sequences in HTTP headers","description":"gunicorn version 19.4.5 contains a CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers vulnerability in \"process_headers\" function in \"gunicorn/http/wsgi.py\" that can result in an attacker causing the server to return arbitrary HTTP headers. This vulnerability appears to have been fixed in 19.5.0.","status":"published","published":"2018-07-12T20:30:49Z","modified":"2026-09-08T15:38:30Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"},{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-93"],"updated_at":"2026-11-02T14:41:13.477974Z"}],"nvd":[{"id":"CVE-2018-1000164","description":"gunicorn version 19.4.5 contains a CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers vulnerability in \"process_headers\" function in \"gunicorn/http/wsgi.py\" that can result in an attacker causing the server to return arbitrary HTTP headers. This vulnerability appears to have been fixed in 19.5.0.","status":"published","published":"2018-04-18T19:29:00.707Z","modified":"2026-06-17T01:32:34.163Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-93"],"updated_at":"2026-11-02T14:04:25.506659Z"}],"osv":[{"id":"CVE-2018-1000164","description":"gunicorn version 19.4.5 contains a CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers vulnerability in \"process_headers\" function in \"gunicorn/http/wsgi.py\" that can result in an attacker causing the server to return arbitrary HTTP headers. 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