CVE-2021-39201 Information

Description

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

CVSS Vector

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

Reference

https://hackerone.com/reports/1142140 https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-wh69-25hr-h94v https://www.debian.org/security/2021/dsa-4985

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

REQUIRED

Confidentiality Impact

CHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

NONE

Base Severity

5.4