🟠 《高危安全漏洞：CVE-2026-53593》

CVSS 评分: 高危（8.8）　　状态: Received　　发布时间: 2026-07-20

漏洞描述

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.224, the denylist that neutralizes dangerous file uploads (Helper::$restricted_extensions) is incomplete: it does not cover the .pht extension. The authenticated upload endpoint POST /uploads/upload (SecureController@upload) stores files with their original extension into the web-accessible directory storage/app/public/uploads/ (served at /storage/uploads/). On the standard Apache + libapache2-mod-php deployment, the default handler <FilesMatch ".+\.ph(ar|p[3457]?|t|tml)$"> executes .pht, so any authenticated agent can upload a .pht web shell and run arbitrary commands as the web-server user (www-data). This is a direct bypass of the fix for CVE-2025-48471, which added phtml/phar but not pht (nor phtm, phps). Version 1.8.224 contains an updated fix.

🔍 技术细节

字段 值
CVE ID CVE-2026-53593
CVSS 评分 8.8 🟠
严重程度 高危
CVSS 向量 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE 分类 CWE-434
发布时间 2026-07-20
最后更新 2026-07-20
状态 Received
数据来源 security-advisories@github.com

🔗 参考链接