UBUNTU-CVE-2021-39202

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    UBUNTU-CVE-2021-39202

    Published: 9 Sept 2021Last Modified: 20 May 2026
    Upstream:
    CVE-2021-39202

    Summary:

    Details: WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. In affected versions the widgets editor introduced in WordPress 5.8 beta 1 has improper handling of HTML input in the Custom HTML feature. This leads to stored XSS in the custom HTML widget. This has been patched in WordPress 5.8. It was only present during the testing/beta phase of WordPress 5.8.

    References: https://ubuntu.com/security/CVE-2021-39202, https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-fr6h-3855-j297, https://hackerone.com/reports/1222797, https://www.cve.org/CVERecord?id=CVE-2021-39202

    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-2021-39202 | CVE-DB