CVE-2026-12399

MediumCVSS 4.4/10Last modified Jun 29, 2026

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.

Metrics

CVSS 3.1 4.4/10CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79

Affected software

Vendor	Product	Versions
jegstudio	Gutenverse – WordPress Blocks, Page Builder & Site Editor	<= 3.8.0

References

Timeline

Published: Jun 27, 2026
Last modified: Jun 29, 2026
NVD status: Deferred

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