CVE-2021-39202

—

CVSS 3.1

5.4 medium

EPSS

<1%p55

Published

Sep 9, 2021 (Sep 9, 2021)

Modified

Jun 17, 2026

Description

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.

Vendors: wordpress
Products: wordpress
Ecosystems: WordPress
Weakness: CWE-79
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.8%)

In the news0 stories

No ingested article mentions this CVE yet.