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    CVE-2022-39348

    Twisted is an event-based framework for internet applications. Started with version 0.9.4, when the host header does not match a configured host `twisted.web.vhost.NameVirtualHost` will return a `NoResource` resource which renders the Host header unescaped into the 404 response allowing HTML and script injection. In practice this should be very difficult to exploit as being able to modify the Host header of a normal HTTP request implies that one is already in a privileged position. This issue was fixed in version 22.10.0rc1. There are no known workarounds.

    Published:Oct 26, 2022
    Last Modified:Nov 3, 2025
    EPS:Oct 26, 2022
    EPSS Score:0.00463
    CVSS Score:5.4

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Twisted
    Product
    Twisted

    Exploits

    https://github.com/twisted/twisted/security/advisories/GHSA-vg46-2rrj-3647https://github.com/twisted/twisted/security/advisories/GHSA-vg46-2rrj-3647

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    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