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CVE-2021-24306— Ultimate Member < 2.1.20 - Authenticated Reflected Cross-Site Scripting (XSS)

Quick assessment

Affected
Ultimate Member Ultimate Member – User Profile, User Registration, Login & Membership 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是WordPress（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 Membership & Learning Management System Plugin for WordPress plugin 4.21.1版本之前存在跨站脚本漏洞，该漏洞源于插件在生成用于编辑用户自己的资料的链接时未正确过滤，验证或编码查询字符串，导致反射型跨站点脚本问题。

AI Predicted 4.3 Difficulty: Easy EPSS 0.62% · P48
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I. Basic Information for CVE-2021-24306

Vulnerability Information
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Vulnerability Title
Ultimate Member < 2.1.20 - Authenticated Reflected Cross-Site Scripting (XSS)
Source: CVE Program / CVE List V5
Vulnerability Description
The Ultimate Member – User Profile, User Registration, Login & Membership Plugin WordPress plugin before 2.1.20 did not properly sanitise, validate or encode the query string when generating a link to edit user's own profile, leading to an authenticated reflected Cross-Site Scripting issue. Knowledge of the targeted username is required to exploit this, and attackers would then need to make the related logged in user open a malicious link.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress是WordPress（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 Membership & Learning Management System Plugin for WordPress plugin 4.21.1版本之前存在跨站脚本漏洞，该漏洞源于插件在生成用于编辑用户自己的资料的链接时未正确过滤，验证或编码查询字符串，导致反射型跨站点脚本问题。
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
Ultimate Member Ultimate Member – User Profile, User Registration, Login & Membership Plugin 2.1.20 ~ 2.1.20 -

II. Public POCs for CVE-2021-24306

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III. Intelligence Information for CVE-2021-24306

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Vendor Advisories for CVE-2021-24306 (1)

IV. Related Vulnerabilities

Same vendor: Ultimate Member
Same weakness: CWE-79

V. Comments for CVE-2021-24306

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