CVE-2026-27636
HIGHCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
4Description
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.
Analysis
Remote code execution in FreeScout prior to version 1.8.206 allows authenticated users to upload `.htaccess` files that bypass file upload restrictions, enabling arbitrary code execution on Apache servers with `AllowOverride All` enabled. Public exploit code exists for this vulnerability. …
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Remediation
Within 24 hours: Identify all FreeScout instances and their current versions; assess whether affected versions are deployed in production. Within 7 days: Apply vendor patch to version 1.8.206 or later on all FreeScout installations; if patching is not immediately feasible, implement the compensating control below. …
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External POC / Exploit Code
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