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I. Basic Information for CVE-2021-4404
Vulnerability Information

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Vulnerability Title
Event Espresso 4 Decaf <= 4.10.11 - Cross-Site Request Forgery Bypass
Source: NVD (National Vulnerability Database)
Vulnerability Description
The Event Espresso 4 Decaf plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 4.10.11. This is due to missing or incorrect nonce validation on the ajaxHandler() function. This makes it possible for unauthenticated attackers to op into notifications via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨站请求伪造(CSRF)
Source: NVD (National Vulnerability Database)
Vulnerability Title
WordPress Plugin Event Espresso 4 Decaf 跨站请求伪造漏洞
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 Event Espresso 4 Decaf 4.10.11及之前版本存在跨站请求伪造漏洞,该漏洞源于ajaxHandler()函数缺少随机数验证模块,导致存在跨站请求伪造(CSRF)漏洞。
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
sethshoultesEvent Espresso 4 Decaf – Event Registration Event Ticketing * ~ 4.10.11 -
II. Public POCs for CVE-2021-4404
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III. Intelligence Information for CVE-2021-4404
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IV. Related Vulnerabilities
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