CVE-2026-16779
MediumCVSS 4.3Exploitation Probability (EPSS)
Low risk13th percentile - higher than 13% of all known CVEs
Summary
The Kubio AI Page Builder plugin for WordPress up to version 2.8.5 is vulnerable to authorization bypass. Improper permission verification allows authenticated attackers with contributor-level access to overwrite front-page configuration, rewrite navigation menus, replace template parts, and overwrite global data. The nonce is available to all block editor users, making it ineffective.
Risk Assessment
The organization may face unauthorized changes to the WordPress site's appearance and configuration. Attackers with low privileges can take control of key site elements.
Recommendation
Update the Kubio AI Page Builder plugin to the latest version. Limit contributor accounts and regularly audit permissions.
Original NVD description (English source)
The Kubio AI Page Builder plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.8.5. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with contributor-level access and above, to overwrite front-page configuration options (show_on_front, page_on_front, and page_for_posts), rewrite primary navigation menu items, replace template parts, and overwrite the Kubio global-data post. Although a nonce check via check_ajax_referer() is present, the nonce is unconditionally emitted into window.kubioUtilsData for every user who can load the block editor, making it harvestable by any Contributor and therefore an ineffective authorization barrier.