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CVE-2026-27636

Freescout remote code execution

8.8 HIGHPublic exploitEPSS 2.11%
  1. Published25 Feb 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Freescout< 1.8.206

Remediation

Fixed in
Freescout≥ 1.8.206

References

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Frequently asked

Is CVE-2026-27636 being actively exploited?

CVE-2026-27636 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 2.11%.

How severe is CVE-2026-27636?

CVE-2026-27636 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 2.11% probability of exploitation.

Which products are affected by CVE-2026-27636?

Affected products include Freescout.

How do I fix CVE-2026-27636?

Upgrade affected software to a fixed version, for example Freescout 1.8.206 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-27636 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.