CVE-2026-16779 Missing authorization in Kubio AI Page Builder
Authenticated contributors can modify front-page settings, menus, and templates due to missing authorization checks in the Kubio AI Page Builder plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-16779?
CVE-2026-16779 is a medium-severity missing authorization vulnerability in extendthemes Kubio AI Page Builder, published on 16 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-862
Which versions are affected by CVE-2026-16779?
How do I fix CVE-2026-16779?
No fix has been published for CVE-2026-16779 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-16779 being exploited?
There is no known exploitation of CVE-2026-16779 in the wild and no public exploit code.
Sources
Also known as GHSA-mxh6-wmv3-9hg9.