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    CVE-2021-39320

    The underConstruction plugin <= 1.18 for WordPress echoes out the raw value of `$GLOBALS['PHP_SELF']` in the ucOptions.php file. On certain configurations including Apache+modPHP, this makes it possible to use it to perform a reflected Cross-Site Scripting attack by injecting malicious code in the request path.

    Published:Sep 1, 2021
    Last Modified:May 5, 2025
    EPS:Sep 1, 2021
    EPSS Score:0.13936
    CVSS Score:6.1

    Affected Products

    Vendor
    Underconstruction Project
    Product
    Underconstruction

    Exploits

    No exploit reference

    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