CVE-2021-39202 is a vulnerability in WordPress
Published on September 9, 2021
WordPress 5.8 beta: Stored Cross-Site Scripting (XSS) vulnerability in widget
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.
Vulnerability Analysis
CVE-2021-39202 is exploitable with network access, requires user interaction and a small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity, and no impact on availability.
Weakness Type
What is a XSS Vulnerability?
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CVE-2021-39202 has been classified to as a XSS vulnerability or weakness.
Products Associated with CVE-2021-39202
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Affected Versions
wordpress-develop:- Version 5.8 beta 1 is affected.
- Version 5.8 beta 2 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.