CVE-2026-16974: Kirki - Freeform Page Builder, Website Builder & Customizer <= 6.2.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via post_meta Shortcode
The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the postmeta Shortcode in all versions up to, and including, 6.2.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-16974?
The severity of CVE-2026-16974 is medium with a score of 6.4.
What type of vulnerability is CVE-2026-16974?
CVE-2026-16974 is an authenticated stored cross-site scripting (XSS) vulnerability.
How do I fix CVE-2026-16974?
To fix CVE-2026-16974, update the Kirki – Freeform Page Builder, Website Builder & Customizer plugin to version 6.2.1 or later.
Who is affected by CVE-2026-16974?
Authenticated users with Contributor+ permissions using versions of the Kirki plugin up to and including 6.2.0 are affected by CVE-2026-16974.
What causes the vulnerability in CVE-2026-16974?
CVE-2026-16974 is caused by insufficient input sanitization and output escaping in the post_meta shortcode.