Authorization Bypass Vulnerability in Kadence Blocks by WordPress
CVE-2026-2826

4.3MEDIUM

Key Information:

Vendor

WordPress
Status
Kadence Blocks — Page Builder Toolkit For Gutenberg Editor
Vendor
CVE Published:
4 April 2026

What is CVE-2026-2826?

The Kadence Blocks plugin, utilized in the Gutenberg editor for WordPress, suffers from an authorization bypass vulnerability in all versions up to and including 3.6.3. This issue is rooted in the plugin's failure to adequately validate whether a user possesses the upload_files capability within the process_pattern REST API endpoint. Consequently, authenticated attackers, including those with contributor-level access, are able to upload images to the WordPress Media Library merely by providing remote image URLs. This security flaw underscores the need for proper access controls in plugins that interact with media handling.

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Affected Version(s)

Kadence Blocks — Page Builder Toolkit for Gutenberg Editor 0 <= 3.6.3

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/kadence-blocks...

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Lukasz Sobanski
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