Static Authentication Token Vulnerability in FreeScout Help Desk Software
CVE-2026-27637

9.8CRITICAL

Key Information:

Vendor

Freescout-help-desk

Status
Freescout
Vendor
CVE Published:
25 February 2026

What is CVE-2026-27637?

FreeScout, a help desk and shared inbox application built on the Laravel framework, has a significant vulnerability where its TokenAuth middleware relies on a static authentication token calculated using predictable inputs. This token does not expire or rotate, making it vulnerable to exploitation. If an attacker acquires the application key (APP_KEY), they can generate a valid token for any user, including administrative accounts, leading to potential account takeover without the need for a password. Both this vulnerability and one related to it were addressed in version 1.8.206 of FreeScout.

Affected Version(s)

freescout < 1.8.206

References

https://github.com/freescout-help-desk/freescout/security...
x_refsource_CONFIRM
https://github.com/freescout-help-desk/freescout/security...
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https://github.com/freescout-help-desk/freescout/commit/0...
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CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.