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CVE-2026-3002— Gutenverse <= 4.0.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Multiple Blocks

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.

Gutenverse – Ultimate WordPress FSE Blocks Addons & Ecosystem 插件存在存储型跨站脚本（XSS）漏洞。该漏洞存在于所有版本中，包括最高至 4.0.2 版本，原因是输入清理和输出转义不足。攻击者只需拥有至少是“Contributor”级别的权限，就可以在某些页面中注入任意 web 脚本，当其他用户访问这些页面时，脚本将会执行。

CVSS 6.4 · Medium EPSS 0.26% · P18

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
jegstudio Gutenverse – WordPress Blocks, Page Builder & Site Editor ≤ 4.0.2 affected
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I. Basic Information for CVE-2026-3002

Vulnerability Information
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Vulnerability Title
Gutenverse <= 4.0.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Multiple Blocks
Source: CVE Program / CVE List V5
Vulnerability Description
The Gutenverse – Ultimate WordPress FSE Blocks Addons & Ecosystem plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the multiple blocks in all versions up to, and including, 4.0.2 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.
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 ~ 4.0.2 -

II. Public POCs for CVE-2026-3002

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III. Intelligence Information for CVE-2026-3002

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Other References for CVE-2026-3002 (3)

Other References for CVE-2026-3002 (1)

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-3002

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