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CVE-2021-4350— Frontend File Manager <= 18.2 - Unauthenticated HTML Injection leading to Spam Emails

Quick assessment

Affected
nmedia Frontend File Manager Plugin
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 Frontend File Manager 存在安全漏洞，该漏洞源于缺少对 wpfm_send_file_in_email AJAX 接口的身份验证保护。

CVSS 7.2 · High EPSS 0.67% · P49
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I. Basic Information for CVE-2021-4350

Vulnerability Information
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Vulnerability Title
Frontend File Manager <= 18.2 - Unauthenticated HTML Injection leading to Spam Emails
Source: CVE Program / CVE List V5
Vulnerability Description
The Frontend File Manager plugin for WordPress is vulnerable to Unauthenticated HTML Injection in versions up to, and including, 18.2. This is due to lacking authentication protections on the wpfm_send_file_in_email AJAX action. This makes it possible for unauthenticated attackers to send emails using the site with a custom subject, recipient email, and body with unsanitized HTML content. This effectively lets the attacker use the site as a spam relay.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Plugin Frontend File Manager 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 Frontend File Manager 存在安全漏洞，该漏洞源于缺少对 wpfm_send_file_in_email AJAX 接口的身份验证保护。
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
nmedia Frontend File Manager Plugin * ~ 18.3 -

II. Public POCs for CVE-2021-4350

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III. Intelligence Information for CVE-2021-4350

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Vendor Advisories for CVE-2021-4350 (1)

Security Blog Posts for CVE-2021-4350 (1)

Same Patch Batch · nmedia · 2023-06-07 · 8 CVEs total

CVE-2021-4368 9.9 CRITICAL Frontend File Manager <= 18.2 - Authenticated Settings Change leading to Arbitrary File Up
CVE-2021-4356 9.0 CRITICAL Frontend File Manager <= 18.2 - Unauthenticated Arbitrary File Download
CVE-2021-4365 7.2 HIGH Frontend File Manager <= 18.2 - Unauthenticated Stored Cross-Site Scripting
CVE-2021-4359 6.5 MEDIUM Frontend File Manager Plugin <= 18.2 - Unauthenticated Arbitrary Post Deletion
CVE-2021-4344 6.4 MEDIUM Frontend File Manager <= 18.2 - Privilege Escalation
CVE-2021-4369 5.8 MEDIUM Frontend File Manager <= 18.2 - Unauthenticated Content Injection
CVE-2021-4351 5.8 MEDIUM Frontend File Manager <= 18.2 - Unauthenticated Post Meta Change

IV. Related Vulnerabilities

Same product: Frontend File Manager Plugin
Same vendor: nmedia
Same weakness: CWE-862

V. Comments for CVE-2021-4350

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