e107 CMS v3.2.1 - Upload Restriction Bypass with Path Traversal File Override

e107 CMS version 3.2.1 contains a critical file upload vulnerability that allows authenticated administrators to override arbitrary server files through path traversal. The vulnerability exists in the Media Manager's remote URL upload functionality (image.php) where the upload_caption parameter is not properly sanitized. An attacker with administrative privileges can use directory traversal sequences (../../../) in the upload_caption field to overwrite critical system files outside the intended upload directory. This can lead to complete compromise of the web application by overwriting configuration files, executable scripts, or other critical system components. The vulnerability was discovered by Hubert Wojciechowski and affects the image.php component in the admin interface.

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

对路径名的限制不恰当(路径遍历)

e107 代码问题漏洞

e107是E107团队的一套开源、免费且基于PHP和MySQL的内容管理系统（CMS）。该系统支持多种插件和外观主题，可作为个人博客、讨论社区、档案资料库等。 e107 3.2.1版本存在代码问题漏洞，该漏洞源于文件上传功能存在路径遍历，可能导致经过身份验证的管理员覆盖任意服务器文件。

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