Kubio AI Page Builder <= 2.8.5 - Missing Authorization to Authenticated (Contributor+) Front-Page/Menu/Template Configuration Reversion via kubio_restore_front_page AJAX Action

4.3
Missing Authorization
CVE CVE-2026-16779
CVSS 4.3 (Medium)
Publicly Published August 15, 2026
Last Updated August 16, 2026
Researcher Wordfence PRISM - Wordfence

Description

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.

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Vulnerability Details for Kubio AI Page Builder

Software Type Plugin
Software Slug kubio (view on wordpress.org)
Patched? Yes
Remediation Update to version 2.8.6, or a newer patched version
Affected Version
  • <= 2.8.5
Patched Version
  • 2.8.6

Recent vulnerabilities in Kubio AI Page Builder

# Title CVE ID CVSS Researchers Date
1 Kubio AI Page Builder <= 2.7.2 - Missing Authorization to Authenticated (Contributor+) Limited File Upload via Kubio Block Attributes CVE-2026-5427 5.3 oolongeya April 16, 2026
2 Kubio AI Page Builder <= 2.7.0 - Authenticated (Contributor+) Stored Cross-Site Scripting CVE-2026-34887 6.4 timomangcut March 31, 2026
3 Kubio AI Page Builder <= 2.6.3 - Missing Authorization to Authenticated (Subscriber+) Limited Plugin Installation CVE-2025-8487 5.4 wesley (wcraft) September 18, 2025
4 Kubio AI Page Builder <= 2.5.1 - Unauthenticated Local File Inclusion CVE-2025-2294 9.8 mikemyers March 27, 2025
5 Kubio AI Page Builder <= 2.3.5 - Reflected Cross-Site Scripting CVE-2024-13516 6.1 Stefan Bogdanovic January 17, 2025
6 Kubio AI Page Builder <= 2.2.4 - Authenticated (Contributor+) Stored Cross-Site Scripting CVE-2024-39661 6.4 João Pedro Soares de Alcântara August 1, 2024

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