CVE-2018-16471

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    CVE-2018-16471

    Published: 13 Nov 2018Last Modified: 8 Jul 2026

    Summary:

    Details: There is a possible XSS vulnerability in Rack before 2.0.6 and 1.6.11. Carefully crafted requests can impact the data returned by the `scheme` method on `Rack::Request`. Applications that expect the scheme to be limited to 'http' or 'https' and do not escape the return value could be vulnerable to an XSS attack. Note that applications using the normal escaping mechanisms provided by Rails may not impacted, but applications that bypass the escaping mechanisms, or do not use them may be vulnerable.

    References: http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00032.html, http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00016.html, https://groups.google.com/forum/#%21topic/rubyonrails-security/GKsAFT924Ag, https://usn.ubuntu.com/4089-1/, https://lists.debian.org/debian-lts-announce/2018/11/msg00022.html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 65a7104b6b3e9ecd8f33c63a478ab9a33a103507
    Fixed -2bef132505cb2f80c432e3f4526dfef969cd2e25

    Affected versions

    1.6.10
    1.6.9
    1.6.8
    1.6.7
    1.6.6
    1.6.5
    1.6.4
    1.6.3
    1.6.1
    1.6.0

    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