CVE-2026-5364— Drag and Drop File Upload for Contact Form 7 <= 1.1.3 - Unauthenticated Arbitrary File Upload via sanitize_file_name Bypass

Drag and Drop File Upload for Contact Form 7 <= 1.1.3 - Unauthenticated Arbitrary File Upload via sanitize_file_name Bypass

The Drag and Drop File Upload for Contact Form 7 plugin for WordPress is vulnerable to arbitrary file upload in versions up to, and including, 1.1.3. This is due to the plugin extracting the file extension before sanitization occurs and allowing the file type parameter to be controlled by the attacker rather than being restricted to administrator-configured values, which when combined with the fact that validation occurs on the unsanitized extension while the file is saved with a sanitized extension, allows special characters like '$' to be stripped during the save process. This makes it possible for unauthenticated attackers to upload arbitrary PHP files and potentially achieve remote code execution, however, an .htaccess file and name randomization is in place which restricts real-world exploitability.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

危险类型文件的不加限制上传

WordPress plugin Drag and Drop File Upload for Contact Form 代码问题漏洞

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。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Drag and Drop File Upload for Contact Form 7 1.1.3及之前版本存在代码问题漏洞，该漏洞源于文件扩展名在清理前提取且文件类型参数可由攻击者控制，可能导致未经身份验证的攻击

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