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CVE-2025-4420— Vayu Blocks <= 1.3.1 - Missing Authorization to Authenticated (Subscriber+) Stored Cross-Site Scripting via containerWidth Parameter

CVSS 6.4 · Medium EPSS 0.20% · P42
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I. Basic Information for CVE-2025-4420

Vulnerability Information
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Vulnerability Title
Vayu Blocks <= 1.3.1 - Missing Authorization to Authenticated (Subscriber+) Stored Cross-Site Scripting via containerWidth Parameter
Source: NVD (National Vulnerability Database)
Vulnerability Description
The Vayu Blocks – Gutenberg Blocks for WordPress & WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘containerWidth’ parameter in all versions up to, and including, 1.3.1 due to a missing capability check on the vayu_blocks_option_panel_callback() function and insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
Vulnerability Title
WordPress plugin Vayu Blocks 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台支持在PHP和MySQL的服务器上架设个人博客网站。WordPress plugin是一个应用插件。 WordPress plugin Vayu Blocks 1.3.1及之前版本存在跨站脚本漏洞，该漏洞源于containerWidth参数缺少能力检查和输入清理转义不足，可能导致存储型跨站脚本攻击。
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

VendorProductAffected VersionsCPESubscribe
themehunkVayu Blocks – Gutenberg Blocks for WordPress & WooCommerce * ~ 1.3.1 -

II. Public POCs for CVE-2025-4420

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III. Intelligence Information for CVE-2025-4420

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IV. Related Vulnerabilities

Same product: Vayu Blocks – Website Builder for the Block Editor
Same vendor: themehunk
Same weakness: CWE-79

V. Comments for CVE-2025-4420

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