CVE-2026-2826

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.

Score

CVSS 3.1 4.3 Medium

Status

Deferred - security@wordfence.com

Published

2026-04-04

Last modified

2026-04-08

Weaknesses

CWE-862

Affected products

• Kadence Blocks Page Builder Toolkit For Gutenberg Editor (Stellarwp)

References

• https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.6.4/includes/class-kadence-blocks-prebuilt-library-res…
• https://www.wordfence.com/threat-intel/vulnerabilities/id/5f91df7e-5d9d-4a3a-9afc-d771106a0be6?source=cve