CVE-2026-27636: FreeScout: Missing .htaccess in Restricted File Extensions Allows Remote Code Execution on Apache
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.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2026-27636?
CVE-2026-27636 has a high severity rating due to its potential for remote code execution.
How do I fix CVE-2026-27636?
To fix CVE-2026-27636, update your FreeScout installation to version 1.8.206 or later.
What systems are affected by CVE-2026-27636?
CVE-2026-27636 affects FreeScout versions prior to 1.8.206.
What type of vulnerability is CVE-2026-27636?
CVE-2026-27636 is a remote code execution vulnerability caused by a missing .htaccess file in restricted file extensions.
What can attackers do with CVE-2026-27636?
Attackers exploiting CVE-2026-27636 can execute arbitrary code on the server due to the upload restriction flaw.