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CVE-2026-10833— Gutenberg Essential Blocks - Page Builder for Gutenberg Blocks & Patterns <= 6.1.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'configurablePrefix' Block Attribute

Quick assessment

Affected
wpdevteam Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns
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.

wpdevteam Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns是wpdevteam公司的WordPress页面构建器插件。 WPDeveloper Gutenberg Essential Blocks 6.1.4及之前版本存在跨站脚本漏洞，该漏洞源于通过'configurablePrefix'块属性的输入清理和输出转义不足，可能导致经过身份验证的攻击者（具有贡献者级别及以上访问权限）在页面中注入任意We

CVSS 6.4 · Medium EPSS 0.33% · P24

Affected Version Matrix 1

VendorProduct Version RangeStatus
wpdevteam Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns ≤ 6.1.4 affected
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I. Basic Information for CVE-2026-10833

Vulnerability Information
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Vulnerability Title
Gutenberg Essential Blocks - Page Builder for Gutenberg Blocks & Patterns <= 6.1.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'configurablePrefix' Block Attribute
Source: CVE Program / CVE List V5
Vulnerability Description
The Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'configurablePrefix' Block Attribute in all versions up to, and including, 6.1.4 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
Vulnerability Title
WPDeveloper Gutenberg Essential Blocks 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
wpdevteam Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns是wpdevteam公司的WordPress页面构建器插件。 WPDeveloper Gutenberg Essential Blocks 6.1.4及之前版本存在跨站脚本漏洞，该漏洞源于通过'configurablePrefix'块属性的输入清理和输出转义不足，可能导致经过身份验证的攻击者（具有贡献者级别及以上访问权限）在页面中注入任意We
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
wpdevteam Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns 0 ~ 6.1.4 -

II. Public POCs for CVE-2026-10833

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III. Intelligence Information for CVE-2026-10833

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Patches & Fixes for CVE-2026-10833 (2)

IV. Related Vulnerabilities

Same product: Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns
Same vendor: wpdevteam
Same weakness: CWE-79

V. Comments for CVE-2026-10833

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