6.8

CVE-2026-84223: unknown kirki Cross-site Scripting

CVSS: 6.8v3.1MediumDeferred
Published 20-09-2026Last modified 20-09-2026
Open JSON

Vulnerability summary

CVE-2026-84223 is a medium (CVSS 6.8) Cross-site Scripting vulnerability in unknown kirki. EPSS estimates a 0.43% chance of exploitation in the next 30 days, higher than 35.9% of scored vulnerabilities. 1 public exploit is recorded. Fixed in 6.3.1.

Overall risk
37/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.8/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.43%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 20-09-2026
    PublishedVulnerability first disclosed.
  2. 20-09-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.43%

Chance of exploitation in the next 30 days

Percentile

36%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

20-09-202619-10-2026
EPSS score
0.43%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (wpscan.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Unknown1 product
Wordpress1 product
  • kirki≥ 6.0.0, ≤ 6.3.0 (fixed in 6.3.1)

2 vendors · 2 products

References

2 links