CVE-2018-19420

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    CVE-2018-19420

    Published: 21 Nov 2018Last Modified: 8 Jul 2026

    Summary:

    Details: In GetSimpleCMS 3.3.15, admin/upload.php blocks .html uploads but there are several alternative cases in which HTML can be executed, such as a file with no extension or an unrecognized extension (e.g., the test or test.asdf filename), because of admin/upload-uploadify.php, and validate_safe_file in admin/inc/security_functions.php.

    References: https://github.com/GetSimpleCMS/GetSimpleCMS/issues/1301

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- a26202bee203910780f5a96b3bc1f52a8f23d0a1
    Fixed -None

    Affected versions

    3.3.15

    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