What is CVE-2026-84219?

CVE-2026-84219 is a high-severity vulnerability in Kirki, classified under Cross-site Scripting. CVSS score: 7.5/10. Published 2026-09-06.

How severe is CVE-2026-84219?

High severity. CVSS v3 base score is 7.5 out of 10.

XSS in Kirki

CVE-2026-84219

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.

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Unknown Kirki

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

contact@wpscan.com (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-84219?: CVE-2026-84219 is a high-severity vulnerability in Kirki, classified under Cross-site Scripting. CVSS score: 7.5/10. Published 2026-09-06.
How severe is CVE-2026-84219?: High severity. CVSS v3 base score is 7.5 out of 10.