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    CVE-2021-39343

    The MPL-Publisher WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient input validation and sanitization via several parameters found in the ~/libs/PublisherController.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 1.30.2. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled.

    Published:Oct 19, 2021
    Last Modified:Apr 25, 2025
    EPS:Oct 19, 2021
    EPSS Score:0.00568
    CVSS Score:5.5

    Affected Products

    Vendor
    Mpl-publisher
    Product
    Mpl-publisher

    Exploits

    https://github.com/BigTiger2020/word-press/blob/main/MPL-Publisher.mdhttps://plugins.trac.wordpress.org/browser/mpl-publisher/trunk/libs/PublisherController.php#L35https://github.com/BigTiger2020/word-press/blob/main/MPL-Publisher.mdhttps://plugins.trac.wordpress.org/browser/mpl-publisher/trunk/libs/PublisherController.php#L35

    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