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CVE-2026-18062— Kadence Blocks <= 3.7.8.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Identity Block Inner Image Content

Quick assessment

Affected
stellarwp Kadence Blocks — Page Builder Toolkit for Gutenberg 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 Kadence Blocks是WordPress基金会的一款网页构建组件集合。 WordPress Kadence Blocks 3.7.8.1及之前版本存在跨站脚本漏洞，该漏洞源于Identity Block Inner Image Content输入清理和输出转义不足，可能导致具有贡献者级别及以上权限的认证攻击者注入任意Web脚本，当用户访问被注入页面时执行。

CVSS 6.4 · Medium EPSS 0.36% · P27

Affected Version Matrix 1

VendorProduct Version RangeStatus
stellarwp Kadence Blocks — Page Builder Toolkit for Gutenberg Editor ≤ 3.7.8.1 affected
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I. Basic Information for CVE-2026-18062

Vulnerability Information
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Vulnerability Title
Kadence Blocks <= 3.7.8.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Identity Block Inner Image Content
Source: CVE Program / CVE List V5
Vulnerability Description
The Kadence Blocks — Page Builder Toolkit for Gutenberg Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Identity Block Inner Image Content in all versions up to, and including, 3.7.8.1 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. This vulnerability is only triggerable when the block's urlTransparent attribute is set to a non-empty value, as this is a required precondition for the vulnerable code path in build_html() to be reached.
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
WordPress Kadence Blocks 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Kadence Blocks是WordPress基金会的一款网页构建组件集合。 WordPress Kadence Blocks 3.7.8.1及之前版本存在跨站脚本漏洞，该漏洞源于Identity Block Inner Image Content输入清理和输出转义不足，可能导致具有贡献者级别及以上权限的认证攻击者注入任意Web脚本，当用户访问被注入页面时执行。
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
stellarwp Kadence Blocks — Page Builder Toolkit for Gutenberg Editor 0 ~ 3.7.8.1 -

II. Public POCs for CVE-2026-18062

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III. Intelligence Information for CVE-2026-18062

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Patches & Fixes for CVE-2026-18062 (3)

Vendor Advisories for CVE-2026-18062 (1)

IV. Related Vulnerabilities

Same product: Kadence Blocks — Page Builder Toolkit for Gutenberg Editor
Same vendor: stellarwp
Same weakness: CWE-79

V. Comments for CVE-2026-18062

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