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CVE-2021-24239— Pie Register < 3.7.0.1 - Reflected Cross-Site Scripting (XSS)

Quick assessment

Affected
Unknown Pie Register – User Registration Forms. Invitation based registrations, Custom Login, Payments
Exploitation
Public or AI PoC available; prioritize validation
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 plugin Payments 3.7.0.1之前版本存在跨站脚本漏洞，该漏洞源于基于邀请的注册，自定义登录，没有在激活码页面输出邀请代码GET参数时清除它，导致跨站点脚本问题。

AI Predicted 4.3 Difficulty: Easy EPSS 1.60% · P75

Public Exploits 1

Nuclei · 1 CVE-2021-24239.yaml [template]
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I. Basic Information for CVE-2021-24239

Vulnerability Information
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Vulnerability Title
Pie Register < 3.7.0.1 - Reflected Cross-Site Scripting (XSS)
Source: CVE Program / CVE List V5
Vulnerability Description
The Pie Register – User Registration Forms. Invitation based registrations, Custom Login, Payments WordPress plugin before 3.7.0.1 does not sanitise the invitaion_code GET parameter when outputting it in the Activation Code page, leading to a reflected Cross-Site Scripting issue.
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 plugin Payments 3.7.0.1之前版本存在跨站脚本漏洞，该漏洞源于基于邀请的注册，自定义登录，没有在激活码页面输出邀请代码GET参数时清除它，导致跨站点脚本问题。
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
Unknown Pie Register – User Registration Forms. Invitation based registrations, Custom Login, Payments 3.7.0.1 ~ 3.7.0.1 -

II. Public POCs for CVE-2021-24239

# POC Description Source Link Shenlong Link
1 WordPress Pie Register plugin before 3.7.0.1 is susceptible to cross-site scripting. The plugin does not sanitize the invitaion_code GET parameter when outputting it in the Activation Code page. An attacker can inject arbitrary script in the browser of an unsuspecting user in the context of the affected site, which can allow the attacker to steal cookie-based authentication credentials and launch other attacks. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-24239.yaml POC Details
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III. Intelligence Information for CVE-2021-24239

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Patches & Fixes for CVE-2021-24239 (1)

Vendor Advisories for CVE-2021-24239 (1)

Same Patch Batch · Unknown · 2021-04-22 · 7 CVEs total

CVE-2021-24240 Business Hours Pro <= 5.5.0 - Unauthenticated Arbitrary File Upload to RCE
CVE-2021-24241 Advanced Custom Field Pro < 5.9.1 - Reflected Cross-Site Scripting (XSS)
CVE-2021-24232 Advanced Booking Calendar < 1.6.8 - Authenticated Reflected Cross-Site Scripting (XSS)
CVE-2021-24233 Cooked Pro < 1.7.5.6 - Unauthenticated Reflected Cross Site Scripting (XSS)
CVE-2021-24234 Ivory Search < 4.6.1 - Reflected Cross Site Scripting (XSS)
CVE-2021-24235 Goto - Tour & Travel < 2.0 - Unauthenticated Reflected XSS

IV. Related Vulnerabilities

Same vendor: Unknown
Same weakness: CWE-79

V. Comments for CVE-2021-24239

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