CVE-2026-66629: WordPress Kirki plugin <= 6.2.3 - Cross Site Scripting (XSS) vulnerability

High severity · published Aug 18, 2026

CVE-2026-66629

WordPress Kirki plugin <= 6.2.3 - Cross Site Scripting (XSS) vulnerability

7.1

CVSS

0.3%

EPSS

On KEV

Description

Unauthenticated Cross Site Scripting (XSS) in Kirki <= 6.2.3 versions.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

Required

Confidentiality

Low

Integrity

Low

Availability

Low

Scope

Changed

Exploitation

Is it being used?

Exploit prediction (EPSS)0.3% · higher than 16% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Kirki · Themeum

through 6.2.3 · source: vendor

Affected product

Kirki

Themeum

All Kirki CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-66629

CVE.org

https://www.cve.org/CVERecord?id=CVE-2026-66629

patchstack.com

https://patchstack.com/database/wordpress/plugin/kirki/vulnerability/wordpress-kirki-plugin-6-2-3-cross-site-scripting-xss-vulnerability?_s_id=cve