---
id: CVE-2026-81534
title: >-
  The Email Customizer for WooCommerce (Pro) plugin for WordPress is vulnerable
  to Remote Code Execution in versions up to, and including, 3.9.5
summary: >-
  The Email Customizer for WooCommerce (Pro) plugin for WordPress is vulnerable
  to Remote Code Execution in versions up to, and including, 3.9.5. This is due
  to insufficient authorization and input sanitization in the send_test_mail()
  func…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-74
vendor: ThemeHigh
product: Email Customizer for WooCommerce (Pro)
affected:
  - email_customizer_for_woocommerce_pro <= 3.9.5
published: '2026-10-15'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T07:18:03.093'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-81534'
references:
  - url: 'https://www.themehigh.com/changelog/?view=22'
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/e8d4cd3d-68ad-45ec-b4b3-e705da4e6628?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-15T07:57:27.852Z'
---

## Overview

The Email Customizer for WooCommerce (Pro) plugin for WordPress is vulnerable to Remote Code Execution in versions up to, and including, 3.9.5. This is due to insufficient authorization and input sanitization in the send_test_mail() function, which allows user-controlled PHP code to be written to executable files in the uploads directory. This makes it possible for authenticated attackers, with subscriber-level access and above, to execute arbitrary PHP code on the server, leading to full site compromise.

## Remediation

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