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CVE-2026-1937— YayMail <= 4.3.2 - Missing Authorization to Authenticated (Shop Manager+) Arbitrary Options Update via 'yaymail_import_state' AJAX Action

Quick assessment

Affected
yaycommerce YayMail – WooCommerce Email Customizer
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 YayMail – WooCommerce Email Customizer 4.3.2及之前版本存在安全漏洞，该漏洞源于yaymail_import_state AJAX操作缺少能力检查，可能导致经过身份验证的攻击

CVSS 7.2 · High EPSS 0.41% · P34
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I. Basic Information for CVE-2026-1937

Vulnerability Information
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Vulnerability Title
YayMail <= 4.3.2 - Missing Authorization to Authenticated (Shop Manager+) Arbitrary Options Update via 'yaymail_import_state' AJAX Action
Source: CVE Program / CVE List V5
Vulnerability Description
The YayMail – WooCommerce Email Customizer plugin for WordPress is vulnerable to unauthorized modification of data that can lead to privilege escalation due to a missing capability check on the `yaymail_import_state` AJAX action in all versions up to, and including, 4.3.2. This makes it possible for authenticated attackers, with Shop Manager-level access and above, to update arbitrary options on the WordPress site. This can be leveraged to update the default role for registration to administrator and enable user registration for attackers to gain administrative user access to a vulnerable site.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin YayMail – WooCommerce Email Customizer 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 YayMail – WooCommerce Email Customizer 4.3.2及之前版本存在安全漏洞，该漏洞源于yaymail_import_state AJAX操作缺少能力检查，可能导致经过身份验证的攻击
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)

Affected Products

Vendor Product Affected Versions CPE Subscribe
yaycommerce YayMail – WooCommerce Email Customizer 0 ~ 4.3.2 -

II. Public POCs for CVE-2026-1937

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III. Intelligence Information for CVE-2026-1937

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Patches & Fixes for CVE-2026-1937 (1)

Same Patch Batch · yaycommerce · 2026-02-18 · 4 CVEs total

CVE-2026-1938 5.3 MEDIUM YayMail <= 4.3.2 - Missing Authorization to Authenticated (Shop Manager+) License Key Dele
CVE-2026-1943 4.4 MEDIUM YayMail <= 4.3.2 - Authenticated (Shop Manager+) Stored Cross-Site Scripting via Template
CVE-2026-1831 2.7 LOW YayMail <= 4.3.2 - Missing Authorization to Authenticated (Shop Manager+) Plugin Installat

IV. Related Vulnerabilities

Same product: YayMail – WooCommerce Email Customizer
Same vendor: yaycommerce
Same weakness: CWE-862

V. Comments for CVE-2026-1937

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