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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.

PUBLISHED Reserved 2026-02-19 | Published 2026-04-04 | Updated 2026-04-08 | Assigner Wordfence




MEDIUM: 4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Problem types

CWE-862 Missing Authorization

Product status

Default status
unaffected

Any version
affected

Timeline

2026-02-10:Discovered
2026-02-19:Vendor Notified
2026-04-03:Disclosed

Credits

Lukasz Sobanski finder

References

www.wordfence.com/...-5d9d-4a3a-9afc-d771106a0be6?source=cve

plugins.trac.wordpress.org/...-prebuilt-library-rest-api.php

cve.org (CVE-2026-2826)

nvd.nist.gov (CVE-2026-2826)

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