freescout-help-desk freescout up to 1.8.205 Authentication Token random values

Summaryinfo

A vulnerability, which was classified as problematic, was found in freescout-help-desk freescout up to 1.8.205. This issue affects some unknown processing of the component Authentication Token Handler. Executing a manipulation can lead to random values. This vulnerability is tracked as CVE-2026-27637. The attack can be launched remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in freescout-help-desk freescout up to 1.8.205 and classified as problematic. This vulnerability affects some unknown functionality of the component Authentication Token Handler. The manipulation with an unknown input leads to a random values vulnerability. The CWE definition for the vulnerability is CWE-330. The product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers. As an impact it is known to affect confidentiality. CVE summarizes:

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.206, FreeScout's `TokenAuth` middleware uses a predictable authentication token computed as `MD5(user_id + created_at + APP_KEY)`. This token is static (never expires/rotates), and if an attacker obtains the `APP_KEY` — a well-documented and common exposure vector in Laravel applications — they can compute a valid token for any user, including the administrator, achieving full account takeover without any password. This vulnerability can be exploited on its own or in combination with CVE-2026-27636. Version 1.8.206 fixes both vulnerabilities.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-27637 since 02/20/2026. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1600.001.

Upgrading to version 1.8.206 eliminates this vulnerability. Applying the patch 004a8231f6e413af1d4680930b0e2342fd4283f9 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• freescout-help-desk

Name

• freescout

Version

• 1.8.205

License

• open-source

Website

• Product: https://github.com/freescout-help-desk/freescout/

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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