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CVE-2023-6629— POST SMTP Mailer <= 2.8.6 - Reflected Cross-Site Scripting via msg

Quick assessment

Affected
saadiqbal Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App
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。该平台支持在PHP和MySQL的服务器上架设个人博客网站。WordPress plugin是一个应用插件。 WordPress Plugin POST SMTP Mailer 存在安全漏洞，该漏洞源于没有对用户输入进行有效的清理和转义。

CVSS 6.1 · Medium EPSS 0.44% · P36
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I. Basic Information for CVE-2023-6629

Vulnerability Information
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Vulnerability Title
POST SMTP Mailer <= 2.8.6 - Reflected Cross-Site Scripting via msg
Source: CVE Program / CVE List V5
Vulnerability Description
The POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for WordPress plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the ‘msg’ parameter in all versions up to, and including, 2.8.6 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. CVE-2023-6621 appears to be a duplicate of this issue. CVE-2024-29128 appears to be a duplicate of this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Plugin POST SMTP Mailer 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。该平台支持在PHP和MySQL的服务器上架设个人博客网站。WordPress plugin是一个应用插件。 WordPress Plugin POST SMTP Mailer 存在安全漏洞，该漏洞源于没有对用户输入进行有效的清理和转义。
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
wpexpertsio POST SMTP – The #1 WordPress SMTP Plugin with Advanced Email Logging and Delivery Failure Notifications * ~ 2.8.6 -

II. Public POCs for CVE-2023-6629

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III. Intelligence Information for CVE-2023-6629

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Patches & Fixes for CVE-2023-6629 (1)

Vendor Advisories for CVE-2023-6629 (1)

IV. Related Vulnerabilities

Same product: Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App
Same vendor: saadiqbal
Same weakness: CWE-79

V. Comments for CVE-2023-6629

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