Kirki <= 6.4.0 - Authenticated (Subscriber+) Arbitrary Shortcode Execution via User Profile Fields in Dynamic SEO Values
- ID
- WPSEC-2026-1934
- Plugin
- Kirki – Freeform Page Builder, Website Builder & Customizer (kirki)
- Affected
- all versions before 6.4.1
- Remediation
- Update to 6.4.1 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
- Weakness
- CWE-94
- Usage
- Plugin Low · Affected versions Low among sites WPSec scans, 2026-10-29
- Attack surface
- Kirki on WPSec AttackSurface
- Fix released
- Published
Description
The Kirki plugin for WordPress is vulnerable to arbitrary shortcode execution via dynamic SEO values in all versions up to, and including, 6.4.0, due to user-editable values such as display names, user profile fields, term names and CMS fields being concatenated into the SEO title and description string that is passed to do_shortcode() without stripping shortcode brackets. This makes it possible for authenticated attackers with subscriber-level access and above to execute arbitrary shortcodes by placing them in their profile fields, when a page's SEO settings use those dynamic user values, for example on an author archive or user template.
References
- https://wpsec.com/vuln/WPSEC-2026-1934/
- https://plugins.svn.wordpress.org/kirki/tags/6.4.1/
- https://wordpress.org/plugins/kirki/
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