CVE-2026-27636
CVE-2026-27636
8.8
HighPublished:
Last updated:
Source:security-advisories@github.com
Analyzed
Weakness (CWE)
CVSS Vector
v3.1- Attack Vector
- Network
- Attack Complexity
- Low
- Privileges Required
- Low
- User Interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
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. Version 1.8.206 fixes both vulnerabilities.
References
security-advisories@github.com
https://github.com/freescout-help-desk/freescout/commit/9984071e6f1b4e633fdcffcea82bbebc9c1e009csecurity-advisories@github.com
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-6gcm-v8xf-j9v9security-advisories@github.com
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-mw88-x7j3-74vc134c704f-9b21-4f2e-91b3-4a467353bcc0
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-6gcm-v8xf-j9v9134c704f-9b21-4f2e-91b3-4a467353bcc0
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-mw88-x7j3-74vc