CVE-2026-16779
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
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.
INFO
Published Date :
Aug. 16, 2026, 5:16 a.m.
Last Modified :
Aug. 16, 2026, 5:16 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-16779
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the Kubio AI Page Builder plugin.
- Verify updated plugin version is 2.8.6 or higher.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-16779.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-16779 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-16779
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-16779 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-16779 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Aug. 16, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'extendthemes', 'product': 'Kubio AI Page Builder', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '2.8.5'}], 'defaultStatus': 'unaffected'}] Added 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Added CWE CWE-862 Added Reference https://plugins.trac.wordpress.org/browser/kubio/tags/2.8.5/lib/editor-assets.php#L411 Added Reference https://plugins.trac.wordpress.org/browser/kubio/tags/2.8.5/lib/kubio-block-library.php#L197 Added Reference https://plugins.trac.wordpress.org/browser/kubio/tags/2.8.5/lib/src/Core/KubioFrontPageRevertNotice.php#L151 Added Reference https://plugins.trac.wordpress.org/browser/kubio/tags/2.8.5/lib/src/Core/KubioFrontPageRevertNotice.php#L25 Added Reference https://plugins.trac.wordpress.org/changeset?reponame=&old=3633801%40kubio&new=3633801%40kubio Added Reference https://www.wordfence.com/threat-intel/vulnerabilities/id/febca991-90a0-46b8-9609-2c8a71b5eb5f?source=cve