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CVE-2021-39348— LearnPress – WordPress LMS Plugin <= 4.1.3.1 Authenticated Stored Cross-Site Scripting

Quick assessment

Affected
LearnPress LearnPress
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress是WordPress基金会的一套使用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 LearnPress 存在跨站脚本漏洞，该漏洞源于 ~/inc/admin/views/backend-user-profile.php 文件中的 $custom_profile 参数转义不足。该参数允许具有管理用户访问权限的攻击者注入任意Web 脚本。

CVSS 5.5 · Medium EPSS 5.20% · P92

Possible ATT&CK Techniques 1 AI

T1059.001 · PowerShell
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I. Basic Information for CVE-2021-39348

Vulnerability Information
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Vulnerability Title
LearnPress – WordPress LMS Plugin <= 4.1.3.1 Authenticated Stored Cross-Site Scripting
Source: CVE Program / CVE List V5
Vulnerability Description
The LearnPress WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient escaping on the $custom_profile parameter found in the ~/inc/admin/views/backend-user-profile.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 4.1.3.1. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled. Please note that this is seperate from CVE-2021-24702.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
Web页面中脚本相关HTML标签转义处理不恰当(基本跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin LearnPress 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress是WordPress基金会的一套使用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 LearnPress 存在跨站脚本漏洞，该漏洞源于 ~/inc/admin/views/backend-user-profile.php 文件中的 $custom_profile 参数转义不足。该参数允许具有管理用户访问权限的攻击者注入任意Web 脚本。
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
LearnPress LearnPress 4.1.3.1 ~ 4.1.3.1 -

II. Public POCs for CVE-2021-39348

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III. Intelligence Information for CVE-2021-39348

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Patches & Fixes for CVE-2021-39348 (1)

Other References for CVE-2021-39348 (2)

IV. Related Vulnerabilities

Same product: LearnPress
Same weakness: CWE-80

V. Comments for CVE-2021-39348

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