GHSA-fxg5-wq6x-vr4w

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    GHSA-fxg5-wq6x-vr4w

    Published: 14 Jan 2023Last Modified: 7 Aug 2026

    Summary: golang.org/x/net/http2/h2c vulnerable to request smuggling attack

    Details: A request smuggling attack is possible when using MaxBytesHandler. When using MaxBytesHandler, the body of an HTTP request is not fully consumed. When the server attempts to read HTTP2 frames from the connection, it will instead be reading the body of the HTTP request, which could be attacker-manipulated to represent arbitrary HTTP2 requests. ### Specific Go Packages Affected golang.org/x/net/http2/h2c

    References: https://nvd.nist.gov/vuln/detail/CVE-2022-41721, https://cs.opensource.google/go/x/net, https://go.dev/cl/447396, https://go.dev/issue/56352, https://lists.fedoraproject.org/archives/list/[email protected]/message/X3H3EWQXM2XL5AGBX6UL443JEJ3GQXJN, https://lists.fedoraproject.org/archives/list/[email protected]/message/X5DXTLLWN6HKI5I35EUZRBISTNZJ75GP, https://pkg.go.dev/vuln/GO-2023-1495

    Affected packages

    Package

    Name: golang.org/x/net

    Purl: pkg:golang/golang.org/x/net

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0.0.0-20220524220425-1d687d428aca
    Fixed -0.1.1-0.20221104162952-702349b0e862

    Affected versions

    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
    GHSA-fxg5-wq6x-vr4w | CVE-DB