Arbitrary File Upload Vulnerability in Kubio Plugin for WordPress
CVE-2026-5427

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Kubio Ai Page Builder
Vendor
CVE Published:
17 April 2026

What is CVE-2026-5427?

The Kubio plugin for WordPress is exposed to an Arbitrary File Upload vulnerability caused by the absence of adequate capability checks within the kubio_rest_pre_insert_import_assets() function. This flaw allows authenticated users with Contributor-level access and higher to upload files retrieved from external URLs directly to the media library via the REST API, circumventing the standard media upload controls. This could lead to unauthorized file storage and potential further exploitation if sensitive files are uploaded.

Affected Version(s)

Kubio AI Page Builder 0 <= 2.7.2

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/kubio/trunk/li...
https://plugins.trac.wordpress.org/browser/kubio/tags/2.7...

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

SeungRyeol Baek
.