UBUNTU-CVE-2021-39201

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    UBUNTU-CVE-2021-39201

    Published: 9 Sept 2021Last Modified: 20 May 2026
    Upstream:
    CVE-2021-39201

    Summary:

    Details: WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. ### Impact The issue allows an authenticated but low-privileged user (like contributor/author) to execute XSS in the editor. This bypasses the restrictions imposed on users who do not have the permission to post `unfiltered_html`. ### Patches This has been patched in WordPress 5.8, and will be pushed to older versions via minor releases (automatic updates). It's strongly recommended that you keep auto-updates enabled to receive the fix. ### References https://wordpress.org/news/category/releases/ https://hackerone.com/reports/1142140 ### For more information If you have any questions or comments about this advisory: * Open an issue in [HackerOne](https://hackerone.com/wordpress)

    References: https://ubuntu.com/security/CVE-2021-39201, https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-wh69-25hr-h94v, https://hackerone.com/reports/1142140, https://www.cve.org/CVERecord?id=CVE-2021-39201

    Affected packages

    Package

    Name: wordpress

    Purl: pkg:deb/ubuntu/wordpress?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    4.3+dfsg-1

    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
    UBUNTU-CVE-2021-39201 | CVE-DB