The Gutenverse – WordPress Blocks, Page Builder & Site Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Post Comment Block 'suffixMain' Attribute in all versions up to, and including, 4.0.8 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. WordPress core wp_kses_post sanitization does not mitigate this vulnerability because the payload is stored inside a Gutenberg block delimiter comment rather than as a raw HTML tag, and is only rendered as exploitable HTML at the PHP render stage.
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Fixes

Solution

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Workaround

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History

Fri, 25 Sep 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 25 Sep 2026 10:30:00 +0000

Type Values Removed Values Added
First Time appeared Jegstudio
Jegstudio gutenverse – Wordpress Blocks, Page Builder & Site Editor
Wordpress
Wordpress wordpress
Vendors & Products Jegstudio
Jegstudio gutenverse – Wordpress Blocks, Page Builder & Site Editor
Wordpress
Wordpress wordpress

Fri, 25 Sep 2026 07:00:00 +0000

Type Values Removed Values Added
Description The Gutenverse – WordPress Blocks, Page Builder & Site Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Post Comment Block 'suffixMain' Attribute in all versions up to, and including, 4.0.8 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. WordPress core wp_kses_post sanitization does not mitigate this vulnerability because the payload is stored inside a Gutenberg block delimiter comment rather than as a raw HTML tag, and is only rendered as exploitable HTML at the PHP render stage.
Title Gutenverse <= 4.0.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via Post Comment Block 'suffixMain' Attribute
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-09-25T13:00:16.165Z

Reserved: 2026-09-16T18:44:26.704Z

Link: CVE-2026-92746

cve-icon Vulnrichment

Updated: 2026-09-25T12:56:06.322Z

cve-icon NVD

Status : Deferred

Published: 2026-09-25T07:16:55.473

Modified: 2026-09-25T14:17:22.603

Link: CVE-2026-92746

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-25T10:15:06Z

Weaknesses