What is CVE-2026-84223?

CVE-2026-84223 is a medium-severity vulnerability in Kirki, classified under Cross-site Scripting. CVSS score: 6.8/10. Published 2026-09-20.

How severe is CVE-2026-84223?

Medium severity. CVSS v3 base score is 6.8 out of 10.

XSS in Kirki

CVE-2026-84223

The Kirki WordPress plugin before 6.3.1 does not sanitize uploaded SVG files while making them uploadable site-wide, allowing users with author-level access and above to upload a file containing JavaScript which is then served from the site's own origin and runs in the session of anyone who opens it.

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/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-2026-84223?: CVE-2026-84223 is a medium-severity vulnerability in Kirki, classified under Cross-site Scripting. CVSS score: 6.8/10. Published 2026-09-20.
How severe is CVE-2026-84223?: Medium severity. CVSS v3 base score is 6.8 out of 10.