CVE-2021-39201

Summary

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)

Impact & exploitability

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N

Affected products we track (1)

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Additional information

• NVD record
• https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-wh69-25hr-h94vAdvisory
• https://hackerone.com/reports/1142140
• https://www.debian.org/security/2021/dsa-4985Advisory
• https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-wh69-25hr-h94vAdvisory
• https://hackerone.com/reports/1142140
• https://www.debian.org/security/2021/dsa-4985Advisory