Kirki – Freeform Page Builder, Website Builder & Customizer <= 6.3.2 - Unauthenticated Insecure Direct Object Reference to Sensitive Information Exposure via Collection Rendering 'context' Parameter
- ID
- WPSEC-2026-0898
- Plugin
- Kirki – Freeform Page Builder, Website Builder & Customizer (kirki)
- Affected
- from 6.0.0 before 6.4.0
- Remediation
- Update to 6.4.0 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Weakness
- CWE-639
- Usage
- Plugin Low · Affected versions None seen among sites WPSec scans, 2026-10-14
- Attack surface
- Kirki – Freeform Page Builder, Website Builder & Customizer on WPSec AttackSurface
- Fix released
- Published
Description
The Kirki plugin for WordPress is vulnerable to Insecure Direct Object Reference via the 'context' parameter of the frontend collection REST endpoint (kirki/v1/frontend/collection) in all versions up to, and including, 6.3.2. The permission check validates only the context 'type' and 'id', but the whole user-supplied context array is then merged into the render options, after the objects the check resolved. This makes it possible for unauthenticated attackers to send a context of a type that is allowed without restriction, such as 'term', carrying an extra 'user' key. That skips the list_users check for user contexts and renders a collection's user dynamic fields, such as email address, display name and user meta, for any user ID.
References
- https://wpsec.com/vuln/WPSEC-2026-0898/
- https://plugins.svn.wordpress.org/kirki/tags/6.4.0/
- https://wordpress.org/plugins/kirki/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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