CVE-2026-100316— European VAT Compliance Assistant for WooCommerce <= 1.36.10 - Unauthenticated Stored Cross-Site Scripting via CF-IPCountry Header
Quick assessment
Affected
davidanderson European VAT Compliance Assistant for WooCommerce
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 的 WooCommerce 欧洲增值税合规助手插件（European VAT Compliance Assistant for WooCommerce）在 1.36.10 及以下所有版本中存在存储型跨站脚本（Stored XSS）漏洞。该漏洞源于对 CF-IPCountry 请求头缺乏充分的输入清理和输出转义。这使得未认证的攻击者能够在页面中注入任意 Web 脚本，当用户访问被注入的页面时，这些脚本将被执行。恶意请求头值会在访客结账过程中原样持久化到订单的 post-meta 数据中，因此攻击者
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-100316
Vulnerability Information
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Vulnerability Title
European VAT Compliance Assistant for WooCommerce <= 1.36.10 - Unauthenticated Stored Cross-Site Scripting via CF-IPCountry Header
Source: CVE Program / CVE List V5
Vulnerability Description
The European VAT Compliance Assistant for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via CF-IPCountry Header in all versions up to, and including, 1.36.10 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The malicious header value is persisted verbatim into order post-meta during a guest checkout, meaning no account or authentication is required to plant the payload.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/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 |
|---|---|---|---|---|
| davidanderson | European VAT Compliance Assistant for WooCommerce | 0 ~ 1.36.10 | - |
|
II. Public POCs for CVE-2026-100316
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-100316 (6)
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V. Comments for CVE-2026-100316
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