CVE-2026-2826 Missing authorization in Kadence Blocks — Page Builder Toolkit for Gutenberg Editor
Authenticated contributors can bypass authorization checks to upload images to the WordPress Media Library via remote URLs.
- 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-2026-2826?
CVE-2026-2826 is a medium-severity missing authorization vulnerability in stellarwp Kadence Blocks — Page Builder Toolkit for Gutenberg Editor, published on 4 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Kadence Blocks — Page Builder Toolkit for Gutenberg Editor plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.6.3. This is due to the plugin not properly verifying that a user has the `upload_files` capability in the `process_pattern` REST API endpoint. This makes it possible for authenticated attackers, with contributor level access and above, to upload images to the WordPress Media Library by supplying remote image URLs that the server downloads and creates as media attachments.
Weakness: CWE-862
Which versions are affected by CVE-2026-2826?
How do I fix CVE-2026-2826?
No fix has been published for CVE-2026-2826 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-2026-2826 being exploited?
There is no known exploitation of CVE-2026-2826 in the wild and no public exploit code.
Sources
Also known as GHSA-h47x-p4xp-xqjf.