CVE-2026-16779
Received Received - Intake

Authorization Bypass in Kubio AI Page Builder WordPress Plugin

Publication date: 2026-08-16

Last updated on: 2026-08-16

Assigner: 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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-08-16
Last Modified
2026-08-16
Generated
2026-08-16
AI Q&A
2026-08-16
EPSS Evaluated
N/A
NVD
CVE-2026-16779
EUVD
EUVD-2026-59869

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
kubio ai_page_builder to 2.8.5 (inc)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

The Kubio AI Page Builder plugin for WordPress has an authorization bypass flaw in versions up to 2.8.5. It fails to properly verify user permissions before allowing actions. Authenticated attackers with contributor-level access or higher can modify front-page settings, navigation menus, template parts, and global data due to a weak nonce check that is exposed to all users who can access the block editor.

Detection Guidance

Check for unauthorized changes to front-page settings, navigation menus, or template parts in WordPress. Review user roles with contributor access or higher for suspicious activity. Use WordPress admin logs or security plugins to monitor for unauthorized modifications.

Impact Analysis

If you use the vulnerable Kubio AI Page Builder plugin, an attacker could change your website's front page, alter navigation menus, replace template parts, or overwrite global settings without proper authorization. This could disrupt your site's appearance and functionality.

Compliance Impact

This vulnerability allows authenticated attackers with contributor-level access to modify front-page configurations and navigation menus. While it does not directly expose sensitive data, unauthorized changes to site structure could undermine compliance measures that rely on consistent data handling and access controls, potentially violating GDPR's integrity and confidentiality principles or HIPAA's access control requirements.

Mitigation Strategies

Update the Kubio AI Page Builder plugin to the latest version if available. Remove or restrict contributor-level access to untrusted users. Implement additional access controls or monitoring for front-page configuration changes.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-16779. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart