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CVE-2021-24687— Modern Events Calendar Lite < 5.22.2 - Admin+ Stored Cross-Site Scripting

Quick assessment

Affected
Unknown Modern Events Calendar Lite
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 Modern Events Calendar Lite插件存在跨站脚本漏洞，该漏洞源于WEB应用缺少对客户端数据的正确验证。攻击者可利用该漏洞执行客户端代码。

AI Predicted 4.3 Difficulty: Easy EPSS 0.62% · P47

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2021-24687

Vulnerability Information
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Vulnerability Title
Modern Events Calendar Lite < 5.22.2 - Admin+ Stored Cross-Site Scripting
Source: CVE Program / CVE List V5
Vulnerability Description
The Modern Events Calendar Lite WordPress plugin before 5.22.2 does not escape some of its settings before outputting them in attributes, allowing high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed.
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 Modern Events Calendar Lite 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 Modern Events Calendar Lite插件存在跨站脚本漏洞，该漏洞源于WEB应用缺少对客户端数据的正确验证。攻击者可利用该漏洞执行客户端代码。
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 Modern Events Calendar Lite 5.22.2 ~ 5.22.2 -

II. Public POCs for CVE-2021-24687

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III. Intelligence Information for CVE-2021-24687

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Vendor Advisories for CVE-2021-24687 (1)

Same Patch Batch · Unknown · 2021-10-04 · 7 CVEs total

CVE-2021-24679 Bitcoin / AltCoin Payment Gateway for WooCommerce < 1.6.1 - Reflected Cross-Site Scripting
CVE-2021-24678 CM Tooltip Glossary < 3.9.21 - Contributor+ Stored Cross-Site Scripting
CVE-2021-24676 Better Find and Replace < 1.2.9 - Reflected Cross-Site Scripting
CVE-2021-24673 Appointment Hour Booking < 1.3.16 - Authenticated Stored Cross-Site Scripting
CVE-2021-24654 User Registration < 2.0.2 - Low Privilege Stored Cross-Site Scripting
CVE-2021-24465 Meow Gallery < 4.1.9 - Contributor+ SQL Injection

IV. Related Vulnerabilities

Same product: Modern Events Calendar Lite
Same vendor: Unknown
Same weakness: CWE-79

V. Comments for CVE-2021-24687

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