GHSA-32pc-xphx-q4f6

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    GHSA-32pc-xphx-q4f6

    Published: 12 Jul 2018Last Modified: 8 Sept 2026

    Summary: Gunicorn contains Improper Neutralization of CRLF sequences in HTTP headers

    Details: 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.

    References: https://nvd.nist.gov/vuln/detail/CVE-2018-1000164, https://github.com/benoitc/gunicorn/issues/1227, https://github.com/benoitc/gunicorn/commit/1e10a02e73c87dfadc394b361af33864d0e59e24, https://epadillas.github.io/2018/04/02/http-header-splitting-in-gunicorn-19.4.5, https://github.com/benoitc/gunicorn, https://github.com/pypa/advisory-database/tree/main/vulns/gunicorn/PYSEC-2018-55.yaml, https://lists.debian.org/debian-lts-announce/2018/04/msg00022.html, https://usn.ubuntu.com/4022-1, https://www.debian.org/security/2018/dsa-4186

    Affected packages

    Package

    Name: gunicorn

    Purl: pkg:pypi/gunicorn

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -19.5.0

    Affected versions

    0.1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High