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CVE-2021-34666— Add Sidebar <= 2.0.0 Reflected Cross-Site Scripting

Quick assessment

Affected
Add Sidebar Add Sidebar
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的Add Sidebar插件存在安全漏洞，该漏洞源于~/wp_sidebarMenu.php文件中Add参数反映的跨站点脚本攻击，攻击者可利用该漏洞在2.0.0及以下版本中注入任意web脚本

CVSS 6.1 · Medium EPSS 0.84% · P55
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I. Basic Information for CVE-2021-34666

Vulnerability Information
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Vulnerability Title
Add Sidebar <= 2.0.0 Reflected Cross-Site Scripting
Source: CVE Program / CVE List V5
Vulnerability Description
The Add Sidebar WordPress plugin is vulnerable to Reflected Cross-Site Scripting via the add parameter in the ~/wp_sidebarMenu.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 2.0.0.
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的Add Sidebar插件存在安全漏洞，该漏洞源于~/wp_sidebarMenu.php文件中Add参数反映的跨站点脚本攻击，攻击者可利用该漏洞在2.0.0及以下版本中注入任意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
Add Sidebar Add Sidebar 2.0.0 ~ 2.0.0 -

II. Public POCs for CVE-2021-34666

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III. Intelligence Information for CVE-2021-34666

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Patches & Fixes for CVE-2021-34666 (1)

Vendor Advisories for CVE-2021-34666 (1)

IV. Related Vulnerabilities

Same weakness: CWE-79

V. Comments for CVE-2021-34666

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