Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-1831— YayMail <= 4.3.2 - Missing Authorization to Authenticated (Shop Manager+) Plugin Installation and Activation

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，该漏洞源于缺少能力检查，可能导致未经授权的插件安装和激活。

CVSS 2.7 · Low EPSS 0.30% · P21
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-1831

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
YayMail <= 4.3.2 - Missing Authorization to Authenticated (Shop Manager+) Plugin Installation and Activation
Source: CVE Program / CVE List V5
Vulnerability Description
The YayMail - WooCommerce Email Customizer plugin for WordPress is vulnerable to unauthorized plugin installation and activation due to missing capability checks on the 'yaymail_install_yaysmtp' AJAX action and `/yaymail/v1/addons/activate` REST endpoint 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 install and activate the YaySMTP plugin.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/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，该漏洞源于缺少能力检查，可能导致未经授权的插件安装和激活。
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-2026-1831

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-1831

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-1831 (1)

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-2026-1938 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

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-1831

No comments yet

Leave a comment