CVE-2026-4001— Woocommerce Custom Product Addons Pro <= 5.4.1 - Unauthenticated Remote Code Execution via Custom Pricing Formula
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I. Basic Information for CVE-2026-4001
Vulnerability Information
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Vulnerability Title
Woocommerce Custom Product Addons Pro <= 5.4.1 - Unauthenticated Remote Code Execution via Custom Pricing Formula
Source: NVD (National Vulnerability Database)
Vulnerability Description
The Woocommerce Custom Product Addons Pro plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 5.4.1 via the custom pricing formula eval() in the process_custom_formula() function within includes/process/price.php. This is due to insufficient sanitization and validation of user-submitted field values before passing them to PHP's eval() function. The sanitize_values() method strips HTML tags but does not escape single quotes or prevent PHP code injection. This makes it possible for unauthenticated attackers to execute arbitrary code on the server by submitting a crafted value to a WCPA text field configured with custom pricing formula (pricingType: "custom" with {this.value}).
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
动态执行代码中指令转义处理不恰当(Eval注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
WordPress plugin Woocommerce Custom Product Addons Pro 安全漏洞
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。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Woocommerce Custom Product Addons Pro 5.4.1及之前版本存在安全漏洞，该漏洞源于用户提交的字段值清理和验证不足，可能导致远程代码执行。
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)
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Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| acowebs | Woocommerce Custom Product Addons Pro | * ~ 5.4.1 | - |
II. Public POCs for CVE-2026-4001
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor · 1Advisory · 1
IV. Related Vulnerabilities
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