CVE-2026-102173
Received Received - Intake

Stored XSS in Kirki WordPress Plugin via Registration Metadata

Publication date: 2026-10-07

Last updated on: 2026-10-07

Assigner: Wordfence

Description
The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via registration metadata in all versions up to, and including, 6.3.1 This is due to insufficient escaping in `ExceptionalElements::image_element()`, which concatenates a user-meta value straight into an `<img src="…">` attribute. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute whenever a user accesses a page rendering a Kirki users collection whose image element is bound to one of the nine registration meta fields. Requires public user registration to be enabled and a published page carrying a `kirki-register` element, which prints the required element nonce into the public markup.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-10-07
Last Modified
2026-10-07
Generated
2026-10-07
AI Q&A
2026-10-07
EPSS Evaluated
N/A
NVD
CVE-2026-102173
EUVD
EUVD-2026-94167

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
themeum Kirki – Freeform Page Builder, Website Builder & Customizer 0

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

The Kirki WordPress plugin up to version 6.3.1 has a stored cross-site scripting vulnerability. It occurs because user registration metadata is improperly escaped when rendered in an image element. Attackers can inject malicious scripts into registration fields, which execute when users view pages displaying these fields.

Detection Guidance

Check WordPress sites for the Kirki plugin versions up to 6.3.1. Look for pages with kirki-register elements and inspect user registration metadata fields for unusual script content in image attributes.

Impact Analysis

Unauthenticated attackers can inject scripts that run in users' browsers. This could lead to theft of session cookies, account takeover, or defacement of pages. Requires public user registration and a specific page element to be enabled.

Compliance Impact

This vulnerability could lead to unauthorized access to user data, violating GDPR's data protection principles or HIPAA's security requirements for protected health information. Organizations may face compliance penalties if user data is compromised.

Mitigation Strategies

Update the Kirki plugin to the latest version beyond 6.3.1. Disable public user registration if not needed. Review and sanitize user registration metadata fields for malicious scripts.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-102173. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart