GHSA-wxmh-65f7-jcvw

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    GHSA-wxmh-65f7-jcvw

    Published: 19 Apr 2023Last Modified: 4 Feb 2026

    Summary: Improper header name validation in guzzlehttp/psr7

    Details: ### Impact Improper header parsing. An attacker could sneak in a newline (`\n`) into both the header names and values. While the specification states that `\r\n\r\n` is used to terminate the header list, many servers in the wild will also accept `\n\n`. ### Patches The issue is patched in 1.9.1 and 2.4.5. ### Workarounds There are no known workarounds. ### References * https://www.rfc-editor.org/rfc/rfc7230#section-3.2.4

    References: https://github.com/guzzle/psr7/security/advisories/GHSA-q7rv-6hp3-vh96, https://github.com/guzzle/psr7/security/advisories/GHSA-wxmh-65f7-jcvw, https://nvd.nist.gov/vuln/detail/CVE-2023-29197, https://cve.mitre.org/cgi-bin/cvename.cgi?name=2022-24775, https://github.com/FriendsOfPHP/security-advisories/blob/master/guzzlehttp/psr7/CVE-2023-29197.yaml, https://github.com/guzzle/psr7, https://lists.debian.org/debian-lts-announce/2023/12/msg00028.html, https://lists.fedoraproject.org/archives/list/[email protected]/message/FJANWDXJZE5BGLN4MQ4FEHV5LJ6CMKQF, https://lists.fedoraproject.org/archives/list/[email protected]/message/O35UN4IK6VS2LXSRWUDFWY7NI73RKY2U, https://www.rfc-editor.org/rfc/rfc7230#section-3.2.4

    Affected packages

    Package

    Name: guzzlehttp/psr7

    Purl: pkg:composer/guzzlehttp/psr7

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.9.1

    Affected versions

    1.0.0

    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