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CVE-2021-24943— Registrations for the Events Calendar < 2.7.6 - Unauthenticated SQL Injection

Quick assessment

Affected
Unknown Registrations for the Events Calendar – Event Registration Plugin
Exploitation
Public or AI PoC available; prioritize validation
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 插件 Events Calendar 2.7.6 之前存在SQL注入漏洞，该漏洞源于 rtec_send_unregister_link AJAX 操作（未经身份验证和经过身份验证的用户均可使用）中的 event_id 不会进行清理和转义。

AI Predicted 9.8 Difficulty: Trivial EPSS 7.30% · P94

Public Exploits 1

Nuclei · 1 CVE-2021-24943.yaml [template]
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I. Basic Information for CVE-2021-24943

Vulnerability Information
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Vulnerability Title
Registrations for the Events Calendar < 2.7.6 - Unauthenticated SQL Injection
Source: CVE Program / CVE List V5
Vulnerability Description
The Registrations for the Events Calendar WordPress plugin before 2.7.6 does not sanitise and escape the event_id in the rtec_send_unregister_link AJAX action (available to both unauthenticated and authenticated users) before using it in a SQL statement, leading to an unauthenticated SQL injection.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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和WordPress 插件 SQL注入漏洞
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 插件 Events Calendar 2.7.6 之前存在SQL注入漏洞，该漏洞源于 rtec_send_unregister_link AJAX 操作（未经身份验证和经过身份验证的用户均可使用）中的 event_id 不会进行清理和转义。
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 Registrations for the Events Calendar – Event Registration Plugin 2.7.6 ~ 2.7.6 -

II. Public POCs for CVE-2021-24943

# POC Description Source Link Shenlong Link
1 The Registrations for the Events Calendar WordPress plugin before 2.7.6 does not sanitise and escape the event_id in the rtec_send_unregister_link AJAX action (available to both unauthenticated and authenticated users) before using it in a SQL statement, leading to an unauthenticated SQL injection. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-24943.yaml POC Details
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III. Intelligence Information for CVE-2021-24943

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Vendor Advisories for CVE-2021-24943 (1)

Same Patch Batch · Unknown · 2021-12-06 · 14 CVEs total

CVE-2021-24714 WP All Import < 3.6.3 - Admin+ Stored Cross-Site Scripting
CVE-2021-24718 ARForms Form Builder < 1.5 - Admin+ Stored Cross Site Scripting
CVE-2021-24759 PDF.js Viewer < 2.0.2 - Contributor+ Stored Cross-Site Scripting
CVE-2021-24866 WP Data Access < 5.0.0 - Admin+ SQL Injection
CVE-2021-24914 Tawk.to Live Chat < 0.6.0 - Subscriber+ Visitor Monitoring & Chat Removal
CVE-2021-24917 WPS Hide Login < 1.9.1 - Protection Bypass with Referer-Header
CVE-2021-24924 Email Log < 2.4.8 - Reflected Cross-Site Scripting
CVE-2021-24930 Bookly < 20.3.1 - Staff Member Stored Cross-Site Scripting
CVE-2021-24931 Secure Copy Content Protection and Content Locking < 2.8.2 - Unauthenticated SQL Injection
CVE-2021-24935 WP Google Fonts < 3.1.5 - Reflected Cross-Site Scripting
CVE-2021-24938 WooCommerce Currency Switcher < 1.3.7.1 - Reflected Cross-Site Scripting
CVE-2021-24939 LoginWP < 3.0.0.5 - Reflected Cross-Site Scripting
CVE-2021-25041 Photo Gallery by 10Web < 1.5.68 - Reflected Cross-Site Scripting (XSS)

IV. Related Vulnerabilities

Same product: Registrations for the Events Calendar – Event Registration Plugin
Same vendor: Unknown
Same weakness: CWE-89

V. Comments for CVE-2021-24943

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