FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.206, FreeScout's file upload restriction list in `app/Misc/Helper.php` does not include `.htaccess` or `.user.ini` files. On Apache servers with `AllowOverride All` (a common configuration), an authenticated user can upload a `.htaccess` file to redefine how files are processed, enabling Remote Code Execution.
This vulnerability can be exploited on its own or in combination with CVE-2026-27637. Version 1.8.206 fixes both vulnerabilities.
Attack Parameters
Attack Vector
Network
Атака возможна удалённо
Attack Complexity
Low
Легко эксплуатировать
Privileges Required
Low
Нужны базовые права
User Interaction
None
Не нужно действие пользователя
Impact Assessment
Confidentiality
High
Полная утечка данных
Integrity
High
Полная модификация данных
Availability
High
Полный отказ в обслуживании
CVSS Vector v3.1
Weakness Type (CWE)
References 3
https://github.com/freescout-help-desk/freescout/commit/9984071e6f1b4e633fdcffc…
security-advisories@github.com
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-6gcm-…
security-advisories@github.com
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-mw88-…
security-advisories@github.com