CVE-2026-2633 Missing authorization in Kadence Blocks — Page Builder Toolkit for Gutenberg Editor
Authenticated contributors can bypass upload restrictions to add arbitrary images to the WordPress Media Library due to missing capability checks.
- 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-2026-2633?
CVE-2026-2633 is a medium-severity missing authorization vulnerability in stellarwp Kadence Blocks — Page Builder Toolkit for Gutenberg Editor, published on 18 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Gutenberg Blocks with AI by Kadence WP plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 3.6.1. This is due to a missing capability check in the `process_image_data_ajax_callback()` function which handles the `kadence_import_process_image_data` AJAX action. The function's authorization check via `verify_ajax_call()` only validates `edit_posts` capability but fails to check for the `upload_files` capability. This makes it possible for authenticated attackers, with Contributor-level access and above, to upload arbitrary images from remote URLs to the WordPress Media Library, bypassing the standard WordPress capability restriction that prevents Contributors from uploading files.
Weakness: CWE-862
Which versions are affected by CVE-2026-2633?
How do I fix CVE-2026-2633?
No fix has been published for CVE-2026-2633 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-2026-2633 being exploited?
There is no known exploitation of CVE-2026-2633 in the wild and no public exploit code.
Sources
Also known as GHSA-gch6-cfhh-c44p.