CVE-2026-92746Gutenverse <= 4.0.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via Post Comment Block 'suffixMain' Attribute
Updated under an hour ago ()
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It affects jegstudio Gutenverse – WordPress Blocks, Page Builder & Site Editor. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- Sep 25, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
jegstudio Gutenverse – WordPress Blocks, Page Builder & Site Editor jegstudio:gutenverse_wordpress_blocks_page_builder_and_site_editor (from the name) | through 4.0.8 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/e35f9e09-c386-4e37-9d81-8dd2863457ac?source=cve
- https://plugins.trac.wordpress.org/browser/gutenverse/tags/4.0.8/includes/block/class-post-comment.php#L80
- https://plugins.trac.wordpress.org/browser/gutenverse/tags/4.0.8/includes/block/class-post-comment.php#L51
- https://plugins.trac.wordpress.org/changeset/3710420/gutenverse/trunk/includes/block/class-post-comment.php
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.