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I. Basic Information for CVE-2023-4021
Vulnerability Information

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Vulnerability Title
Modern Events Calendar lite < 7.1.0 - Authenticated (Admin+) Stored Cross-Site Scripting
Source: NVD (National Vulnerability Database)
Vulnerability Description
The Modern Events Calendar lite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Google API key and Calendar ID in versions up to, but not including, 7.1.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
Vulnerability Title
WordPress Plugin Modern Events Calendar lite 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用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是一个应用插件。 WordPress Plugin Modern Events Calendar lite 7.1.0 之前版本存在跨站脚本漏洞,该漏洞源于输入清理和输出转义不足,通过 Google API 密钥和日历 ID 导致跨站脚本攻击,攻击者利用该漏洞可以在页面中注入任
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
VendorProductAffected VersionsCPESubscribe
webnus/Modern Events Calendar Lite * ~ 7.1.0 -
II. Public POCs for CVE-2023-4021
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III. Intelligence Information for CVE-2023-4021
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IV. Related Vulnerabilities
V. Comments for CVE-2023-4021

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