CVE-2026-16974 Cross-site scripting in Kirki – Freeform Page Builder, Website Builder & Customizer
Authenticated contributors can inject arbitrary scripts via post_meta shortcode, leading to stored XSS execution for other users.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-16974?
CVE-2026-16974 is a medium-severity cross-site scripting vulnerability in themeum Kirki – Freeform Page Builder, Website Builder & Customizer, published on 11 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the post_meta 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-16974?
How do I fix CVE-2026-16974?
No fix has been published for CVE-2026-16974 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-16974 being exploited?
There is no known exploitation of CVE-2026-16974 in the wild and no public exploit code.
Sources
Also known as GHSA-g4jx-9qx8-f3f9.