Kubio AI Page Builder <= 2.7.2 - Missing Authorization to Authenticated (Contributor+) Limited File Upload via Kubio Block Attributes
| CVE | CVE-2026-5427 |
|---|---|
| CVSS | 5.3 (Medium) |
| Publicly Published | April 16, 2026 |
| Last Updated | April 17, 2026 |
| Researcher |
oolongeya
- Dreamhack
|
Description
The Kubio plugin for WordPress is vulnerable to Arbitrary File Upload in versions up to and including 2.7.2. This is due to insufficient capability checks in the kubio_rest_pre_insert_import_assets() function, which is hooked to the rest_pre_insert_{post_type} filter for posts, pages, templates, and template parts. When a post is created or updated via the REST API, Kubio parses block attributes looking for URLs in the 'kubio' attribute namespace and automatically imports them via importRemoteFile() without verifying the user has the upload_files capability. This makes it possible for authenticated attackers with Contributor-level access and above to bypass WordPress's normal media upload restrictions and upload files fetched from external URLs to the media library, creating attachment posts in the database.
References
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
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Vulnerability Details for Kubio AI Page Builder
| Software Type | Plugin |
|---|---|
| Software Slug | kubio (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 2.7.3, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in Kubio AI Page Builder
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