CVE-2026-84219: Kirki 6.2.1 - 6.2.5 - Unauthenticated Stored XSS via HTML Entity Decoding
The Kirki WordPress plugin before 6.3.0 does not hold back every spelling of the HTML entities it decodes when rendering, allowing unauthenticated users to store JavaScript in a comment which then runs in the session of anyone viewing a page that displays it, including an administrator, and on every page of the site when its header or footer is built to show comments.
Affected Software
Event History
Frequently Asked Questions
Who can trigger the issue?
Unauthenticated users can store malicious JavaScript in a comment. Exploitation does not require an authenticated WordPress account.
When does the stored JavaScript execute?
It executes in the session of anyone who views a page displaying the malicious comment, including an administrator. If the site header or footer is configured to display comments, it can execute on every page of the site.
Which versions are affected?
Kirki versions 6.2.1 through 6.2.5 are identified as affected. The issue is described as fixed in version 6.3.0.