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CVE-2026-1938— YayMail <= 4.3.2 - Missing Authorization to Authenticated (Shop Manager+) License Key Deletion via '/yaymail-license/v1/license/delete' Endpoint

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-license/v1/license/delete REST端点缺少授权检查

CVSS 5.3 · Medium EPSS 0.32% · P22
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I. Basic Information for CVE-2026-1938

Vulnerability Information
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Vulnerability Title
YayMail <= 4.3.2 - Missing Authorization to Authenticated (Shop Manager+) License Key Deletion via '/yaymail-license/v1/license/delete' Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
The YayMail – WooCommerce Email Customizer plugin for WordPress is vulnerable to unauthorized license key deletion due to a missing authorization check on the `/yaymail-license/v1/license/delete` REST endpoint in versions up to, and including, 4.3.2. This makes it possible for authenticated attackers, with Shop Manager-level access and above, to delete the plugin's license key via the '/yaymail-license/v1/license/delete' endpoint granted they can obtain the REST API nonce.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
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-license/v1/license/delete REST端点缺少授权检查
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 * ~ 4.3.2 -

II. Public POCs for CVE-2026-1938

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III. Intelligence Information for CVE-2026-1938

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Patches & Fixes for CVE-2026-1938 (2)

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

CVE-2026-1937 7.2 HIGH YayMail <= 4.3.2 - Missing Authorization to Authenticated (Shop Manager+) Arbitrary Option
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-2026-1938

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