CVE-2026-27636
HIGHCVSS v3
8.8
HIGH
EPSS Score
22.4%
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
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
Technical Details
- CVSS v3 Vector
- 3.1
- Published
- 2/25/2026
- Last Modified
- 2/26/2026
Frequently Asked Questions
What is CVE-2026-27636?
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
Is CVE-2026-27636 actively exploited?
Active exploitation of CVE-2026-27636 has not been confirmed. The EPSS score is 22.4%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2026-27636?
CVE-2026-27636 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string 3.1.
Is CVE-2026-27636 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.