CVE-2026-102173
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 3.1
- 7.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N - EPSS
- 0.4% chance of exploitation in the next 30 days; higher than 30% of CVEs (scores of 2026-10-25)
- CWE
- CWE-79
- Published
- Modified
- Record from
- the NVD, synced
References
- https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/ComponentLibrary/controller/CompLibFormHandler.php#L361
- https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/ComponentLibrary/controller/CompLibFormHandler.php#L389
- https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/ComponentLibrary/controller/CompLibFormHandler.php#L76
- https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/ComponentLibrary/controller/ElementGenerator.php#L259
- https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/includes/Frontend/Preview/ExceptionalElements.php#L1079