CVE-2026-84219CWE-79cross-site-scripting

CVE-2026-84219

High · published September 6, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
30.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00373 · 30.1th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-09-06T11:16Z
References (1)
https://wpscan.com/vulnerability/e95bd1e3-6f61-423f-add6-519e1ca7bf66/ · [email protected]
EPSS history
Timeline
  • 07 SEP 03:36Z
    EPSS moved — → 0%
    epss
  • 06 SEP 06:00Z
    Kirki 6.2.1 - 6.2.5 - Unauthenticated Stored XSS via HTML Entity Decoding
    cvelistv5