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CVE-2021-4458— Modern Events Calendar Lite <= 6.3.0 - Unauthenticated SQL Injection

Quick assessment

Affected
webnus/ 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 6.3.0及之前版本存在SQL注入漏洞，该漏洞源于wp_ajax_mec_load_single_page AJAX操作的id参数存在SQL注入，可能导致未经验证的攻击者

CVSS 5.9 · Medium EPSS 0.38% · P29

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-4458

Vulnerability Information
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Vulnerability Title
Modern Events Calendar Lite <= 6.3.0 - Unauthenticated SQL Injection
Source: CVE Program / CVE List V5
Vulnerability Description
The Modern Events Calendar Lite plugin for WordPress is vulnerable to SQL Injection via the 'id' parameter of the 'wp_ajax_mec_load_single_page' AJAX action in all versions up to, and including, 6.3.0 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. This is only exploitable on sites with addslashes disabled.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin Modern Events Calendar Lite SQL注入漏洞
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 6.3.0及之前版本存在SQL注入漏洞，该漏洞源于wp_ajax_mec_load_single_page AJAX操作的id参数存在SQL注入，可能导致未经验证的攻击者
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
webnus/ Modern Events Calendar Lite * ~ 6.3.0 -

II. Public POCs for CVE-2021-4458

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III. Intelligence Information for CVE-2021-4458

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Patches & Fixes for CVE-2021-4458 (1)

IV. Related Vulnerabilities

Same product: Modern Events Calendar Lite
Same vendor: webnus/
Same weakness: CWE-89

V. Comments for CVE-2021-4458

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