Kadence Blocks — Page Builder Toolkit for Gutenberg Editor: A security weakness
Kadence Blocks — Page Builder Toolkit for Gutenberg Editor is affected by a security weakness. Exploitation requires at least contributor-level access. The resulting impact depends on how the affected component exposes the vulnerable operation. The published affected range is <= 3.6.3.
- Component
- Kadence Blocks — Page Builder Toolkit for Gutenberg Editor
- Plugin slug
kadence-blocks- Affected
- <= 3.6.3
- Safe version
> 3.6.3- Published
- Apr 04, 2026
- Weakness
- CWE-862 — Missing Authorization
This CVE was published Apr 04, 2026 and is one of 17 known issues for this plugin.
Update, patch or deactivate.
Update Kadence Blocks — Page Builder Toolkit for Gutenberg Editor to a release after 3.6.3, or disable and remove it until a fixed version is available.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical 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.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N