CVE-2026-12399
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.
Does this matter?
Lower severity and a low EPSS score (0.40%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 4.4 MEDIUMCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
- EPSS
- 0.40% probability · 33th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Source
- security@wordfence.com
References
- https://plugins.trac.wordpress.org/browser/gutenverse/tags/3.6.3/lib/framework/helper.php#L1440
- https://plugins.trac.wordpress.org/browser/gutenverse/tags/3.6.3/lib/framework/helper.php#L1775
- https://plugins.trac.wordpress.org/browser/gutenverse/tags/3.6.3/lib/framework/includes/class-api.php#L1956
- https://plugins.trac.wordpress.org/browser/gutenverse/tags/3.6.3/lib/framework/includes/class-frontend-generator.php#L147
- https://plugins.trac.wordpress.org/browser/gutenverse/tags/3.6.3/lib/framework/includes/class-global-variable.php#L78
- https://plugins.trac.wordpress.org/browser/gutenverse/tags/3.8.0/lib/framework/helper.php#L1440
- https://plugins.trac.wordpress.org/browser/gutenverse/tags/3.8.0/lib/framework/helper.php#L1775
- https://plugins.trac.wordpress.org/browser/gutenverse/tags/3.8.0/lib/framework/includes/class-api.php#L1956
- https://plugins.trac.wordpress.org/browser/gutenverse/tags/3.8.0/lib/framework/includes/class-frontend-generator.php#L147
- https://plugins.trac.wordpress.org/browser/gutenverse/tags/3.8.0/lib/framework/includes/class-global-variable.php#L78
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3578328%40gutenverse&new=3578328%40gutenverse&sfp_email=&sfph_mail=
- https://www.wordfence.com/threat-intel/vulnerabilities/id/fd1c679b-43e0-4e3a-ae2d-f6ff8a657512?source=cve
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.