---
id: CVE-2026-100316
title: >-
  European VAT Compliance Assistant for WooCommerce <= 1.36.10 - Unauthenticated
  Stored Cross-Site Scripting via CF-IPCountry Header
summary: >-
  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 outp…
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-79
vendor: davidanderson
product: European VAT Compliance Assistant for WooCommerce
affected:
  - european_vat_compliance_assistant_for_woocommerce <= 1.36.10
published: '2026-10-17'
updated: '2026-10-17'
sourceUpdated: '2026-10-17T07:51:25.399Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-100316'
references:
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/9f17d266-e64f-4721-9c8d-5bc72791ef01?source=cve
  - url: >-
      https://plugins.trac.wordpress.org/browser/woocommerce-eu-vat-compliance/tags/1.36.10/record-order-details.php#L740
  - url: >-
      https://plugins.trac.wordpress.org/browser/woocommerce-eu-vat-compliance/tags/1.36.10/bootstrap.php#L1779
  - url: >-
      https://plugins.trac.wordpress.org/browser/woocommerce-eu-vat-compliance/tags/1.36.10/record-order-details.php#L222
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame&new=3713548%40woocommerce-eu-vat-compliance&old=3676299%40woocommerce-eu-vat-compliance
  - url: >-
      https://plugins.trac.wordpress.org/changeset/3713548/woocommerce-eu-vat-compliance/trunk/record-order-details.php
tags:
  - cve.org
ingestedAt: '2026-10-17T08:02:17.670Z'
---

## Overview

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.

## Affected

- `european_vat_compliance_assistant_for_woocommerce <= 1.36.10`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.