CVE-2026-27636

Name: CVE-2026-27636
Creator: NVD / NIST
Published: 2026-02-25T04:16:03.933+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 2.12%

Last modified Jun 17, 2026

CVE-2026-27636 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. EPSS estimates a 2.12% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.12%

79.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Freescout	Freescout	< 1.8.206

References

https://github.com/freescout-help-desk/freescout/commit/9984071e6f1b4e633fdcffcea82bbebc9c1e009cPatch
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-6gcm-v8xf-j9v9Not Applicable
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-mw88-x7j3-74vcExploit, Vendor Advisory
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-6gcm-v8xf-j9v9Not Applicable
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-mw88-x7j3-74vcExploit, Vendor Advisory

Timeline

Published: Feb 25, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-27636?

How severe is CVE-2026-27636?

CVE-2026-27636 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 2.12% probability of exploitation in the next 30 days.

How do I fix CVE-2026-27636?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-27636?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST