CVE-2026-2826
MediumCVSS 4.3Exploitation Probability (EPSS)
Low risk22th percentile - higher than 22% of all known CVEs
Summary
The Kadence Blocks plugin for WordPress up to version 3.6.3 has an authorization bypass in the process_pattern REST API endpoint, which does not properly verify the upload_files capability. Authenticated attackers with contributor level access or above can upload images to the Media Library by supplying remote image URLs.
Risk Assessment
An attacker can upload malicious images (e.g., with backdoors) to the Media Library, potentially leading to further site compromise.
Recommendation
Update the Kadence Blocks plugin to the latest version. Restrict contributor permissions to the minimum necessary.
Original NVD description (English source)
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.