CVE-2026-12399

Vulnerability 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.

CVSS Score

Related Weaknesses (CWE)

References

• https://plugins.trac.wordpress.org/browser/gutenverse/tags/3.6.3/lib/framework/h
• https://plugins.trac.wordpress.org/browser/gutenverse/tags/3.6.3/lib/framework/h
• https://plugins.trac.wordpress.org/browser/gutenverse/tags/3.6.3/lib/framework/i
• https://plugins.trac.wordpress.org/browser/gutenverse/tags/3.6.3/lib/framework/i
• https://plugins.trac.wordpress.org/browser/gutenverse/tags/3.6.3/lib/framework/i
• https://plugins.trac.wordpress.org/browser/gutenverse/tags/3.8.0/lib/framework/h
• https://plugins.trac.wordpress.org/browser/gutenverse/tags/3.8.0/lib/framework/h
• https://plugins.trac.wordpress.org/browser/gutenverse/tags/3.8.0/lib/framework/i
• https://plugins.trac.wordpress.org/browser/gutenverse/tags/3.8.0/lib/framework/i
• https://plugins.trac.wordpress.org/browser/gutenverse/tags/3.8.0/lib/framework/i
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old
• https://www.wordfence.com/threat-intel/vulnerabilities/id/fd1c679b-43e0-4e3a-ae2