Gutenverse <= 3.8.0 - Authenticated (Editor+) Stored Cross-Site Scripting via 'fonts[].font.font.value' Parameter
| CVE | CVE-2026-12399 |
|---|---|
| CVSS | 4.4 (Medium) |
| Publicly Published | June 26, 2026 |
| Last Updated | June 27, 2026 |
| Researchers |
R4mbb
R4mbb |
Description
The Gutenverse – WordPress Blocks, Page Builder & Site Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 3.8.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with editor-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.
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
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
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Vulnerability Details for Gutenverse – WordPress Blocks, Page Builder & Site Editor
| Software Type | Plugin |
|---|---|
| Software Slug | gutenverse (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 3.8.1, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in Gutenverse – WordPress Blocks, Page Builder & Site Editor
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