p PatchFirst

CVE-2021-39202

CVE-2021-39202 · WordPress 5.8 beta: Stored Cross-Site Scripting (XSS) vulnerability in widget

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 7.6 · High · EPSS 0.8%

Published
Updated

Stack: system

Affected products and versions

  • wordpress-develop

    Versions
    • 5.8 beta 1: Affected
    • 5.8 beta 2: Affected

    No fix published

  • wordpress Ubuntu:16.04:LTS

    Versions
    • 4.3+dfsg-1
    • 4.3.1+dfsg-1
    • 4.4+dfsg-1
    • 4.4.1+dfsg-1
    • 4.4.2+dfsg-1
    • 4.4.2+dfsg-1ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wordpress Ubuntu:18.04:LTS

    Versions
    • 4.8.2+dfsg-2
    • 4.8.3+dfsg-1
    • 4.9.1+dfsg-1
    • 4.9.2+dfsg-1
    • 4.9.4+dfsg-1
    • 4.9.5+dfsg1-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wordpress Ubuntu:20.04:LTS

    Versions
    • 5.2.2+dfsg1-1
    • 5.2.4+dfsg1-1
    • 5.3.2+dfsg1-1
    • 5.3.2+dfsg1-1ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wordpress Ubuntu:22.04:LTS

    Versions
    • 5.7.1+dfsg1-2ubuntu1
    • 5.8.1+dfsg1-2ubuntu1
    • 5.8.2+dfsg1-1ubuntu1
    • 5.8.3+dfsg1-1ubuntu1
    • 5.8.3+dfsg1-1ubuntu1.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wordpress Ubuntu:24.04:LTS

    Versions
    • 6.2+dfsg1-1ubuntu1
    • 6.4.3+dfsg1-1ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wordpress Ubuntu:25.10

    Versions
    • 6.7.2+dfsg1-1.1ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wordpress Ubuntu:26.10

    Versions
    • 6.7.2+dfsg1-1.1ubuntu2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wordpress Ubuntu:26.04:LTS

    Versions
    • 6.7.2+dfsg1-1.1ubuntu1
    • 6.7.2+dfsg1-1.1ubuntu2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

Check your server →