What is CVE-2026-84220?

CVE-2026-84220 is a medium-severity vulnerability in Kirki, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 4.8/10. Published 2026-10-09.

How severe is CVE-2026-84220?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Vulnerability in Kirki

CVE-2026-84220

The Kirki WordPress plugin before 6.3.2 does not prevent shortcodes held in comments from being executed when it renders them, and displays comments regardless of their moderation status, allowing unauthenticated visitors to run shortcodes registered on the site and to read private custom fields of the page being viewed.

Published 2026-10-09 · last modified 2026-10-09.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Kirki

Weakness classification (CWE)

CWE-74 — Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)

References

wpscan.com/vulnerability/e5cfd004-dd57-4d42-858c-fbb9b9e320f6/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-84220?: CVE-2026-84220 is a medium-severity vulnerability in Kirki, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 4.8/10. Published 2026-10-09.
How severe is CVE-2026-84220?: Medium severity. CVSS v3 base score is 4.8 out of 10.