CVE-2021-38751

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    CVE-2021-38751

    Published: 16 Aug 2021Last Modified: 8 Jul 2026

    Summary:

    Details: A HTTP Host header attack exists in ExponentCMS 2.6 and below in /exponent_constants.php. A modified HTTP header can change links on the webpage to an arbitrary value, leading to a possible attack vector for MITM.

    References: https://github.com/exponentcms/exponent-cms/issues/1544

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -6f21094f2ff194b442a604b5fd23dcebea8b8cc5

    Affected versions

    v2.5.1patch3
    v2.5.1patch2
    v2.5.1patch1
    v2.5.1
    v2.5.0patch2
    v2.5.0patch1
    v2.5.0

    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
    CVE-2021-38751 | CVE-DB