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CVE-2026-92746— Gutenverse <= 4.0.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via Post Comment Block 'suffixMain' Attribute

Quick assessment

Affected
jegstudio Gutenverse – WordPress Blocks, Page Builder & Site Editor
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress 的 Gutenverse – WordPress Blocks, Page Builder & Site Editor 插件存在存储型跨站脚本（Stored XSS）漏洞，影响所有 4.0.8 及更早版本。该漏洞源于对 Post Comment Block 的 'suffixMain' 属性缺乏充分的输入清理和输出转义。这使得拥有贡献者级别及以上权限的已认证攻击者可以在页面中注入任意网页脚本，当其他用户访问被注入的页面时，这些脚本便会执行。 WordPress 核心功能中的 wp_kses_po

CVSS 6.4 · Medium EPSS 0.19% · P8

Affected Version Matrix 1

VendorProduct Version RangeStatus
jegstudio Gutenverse – WordPress Blocks, Page Builder & Site Editor ≤ 4.0.8 affected
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I. Basic Information for CVE-2026-92746

Vulnerability Information
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Vulnerability Title
Gutenverse <= 4.0.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via Post Comment Block 'suffixMain' Attribute
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
jegstudio Gutenverse – WordPress Blocks, Page Builder & Site Editor 0 ~ 4.0.8 -

II. Public POCs for CVE-2026-92746

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III. Intelligence Information for CVE-2026-92746

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Patches & Fixes for CVE-2026-92746 (1)

Vendor Advisories for CVE-2026-92746 (1)

IV. Related Vulnerabilities

Same product: Gutenverse – WordPress Blocks, Page Builder & Site Editor
Same vendor: jegstudio
Same weakness: CWE-79

V. Comments for CVE-2026-92746

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