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CVE-2021-34654— Custom Post Type Relations <= 1.0 Reflected Cross-Site Scripting

Quick assessment

Affected
Custom Post Type Relations Custom Post Type Relations
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 插件是WordPress开源的一个应用插件。 WordPress plugin Custom Post Type Relations 中存在跨站脚本漏洞，该漏洞源于产品/pages/admin-page.php页面的cptr[name]参数未能正确处理用户输入数据，攻击者可通过该漏洞注入任意web脚本来执行客户端代码。 以下产品及版本受到影响：Wor

CVSS 6.1 · Medium EPSS 0.90% · P59

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2021-34654

Vulnerability Information
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Vulnerability Title
Custom Post Type Relations <= 1.0 Reflected Cross-Site Scripting
Source: CVE Program / CVE List V5
Vulnerability Description
The Custom Post Type Relations WordPress plugin is vulnerable to Reflected Cross-Site Scripting via the cptr[name] parameter found in the ~/pages/admin-page.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 1.0.
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 插件跨站脚本漏洞
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 插件是WordPress开源的一个应用插件。 WordPress plugin Custom Post Type Relations 中存在跨站脚本漏洞，该漏洞源于产品/pages/admin-page.php页面的cptr[name]参数未能正确处理用户输入数据，攻击者可通过该漏洞注入任意web脚本来执行客户端代码。 以下产品及版本受到影响：Wor
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
Custom Post Type Relations Custom Post Type Relations 1.0 ~ 1.0 -

II. Public POCs for CVE-2021-34654

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III. Intelligence Information for CVE-2021-34654

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Vendor Advisories for CVE-2021-34654 (1)

IV. Related Vulnerabilities

Same weakness: CWE-79