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CVE-2026-81534— Email Customizer for WooCommerce (Pro) <= 3.9.5 - Authenticated (Subscriber+) Remote Code Execution via 'template' Parameter

Quick assessment

Affected
ThemeHigh Email Customizer for WooCommerce (Pro)
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 邮件自定义插件（Pro 版本）在 3.9.5 及以下版本中存在远程代码执行漏洞。该漏洞是由于 函数缺乏足够的权限验证和输入净化处理，导致用户可控的 PHP 代码可以被写入到上传目录中的可执行文件内。这使得经过身份认证的攻击者（拥有订阅者及以上权限）能够在服务器上执行任意 PHP 代码，从而可能导致整个网站被完全控制。

CVSS 8.8 · High EPSS 0.47% · P39

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
ThemeHigh Email Customizer for WooCommerce (Pro) ≤ 3.9.5 affected
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I. Basic Information for CVE-2026-81534

Vulnerability Information
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Vulnerability Title
Email Customizer for WooCommerce (Pro) <= 3.9.5 - Authenticated (Subscriber+) Remote Code Execution via 'template' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输出中的特殊元素转义处理不恰当(注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
ThemeHigh Email Customizer for WooCommerce (Pro) 0 ~ 3.9.5 -

II. Public POCs for CVE-2026-81534

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III. Intelligence Information for CVE-2026-81534

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Other References for CVE-2026-81534 (1)

Other References for CVE-2026-81534 (1)

IV. Related Vulnerabilities

Same vendor: ThemeHigh
Same weakness: CWE-74

V. Comments for CVE-2026-81534

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