CVE-2026-84223CWE-79cross-site-scripting

CVE-2026-84223

Medium · published September 20, 2026

CVSS v3.1
6.8
EPSS
0%
Percentile
36.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00431 · 36.3th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-09-20T11:16Z
References (1)
https://wpscan.com/vulnerability/02ed6d31-84f3-4723-8b49-ddb00c7db7d3/ · [email protected]
EPSS history
Timeline
  • 21 SEP 03:36Z
    EPSS moved — → 0%
    epss
  • 20 SEP 06:00Z
    Kirki 6.0.0 - 6.3.0 - Author+ Stored XSS via Unsanitized SVG Upload
    cvelistv5