Vulnerability Description
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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Freescout | Freescout | < 1.8.206 |
Related Weaknesses (CWE)
References
- https://github.com/freescout-help-desk/freescout/commit/004a8231f6e413af1d468093Patch
- https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-6gcm-vExploitVendor Advisory
- https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-mw88-xNot Applicable
- https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-6gcm-vExploitVendor Advisory
- https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-mw88-xNot Applicable
FAQ
What is CVE-2026-27637?
CVE-2026-27637 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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...
How severe is CVE-2026-27637?
CVE-2026-27637 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-27637?
Check the references section above for vendor advisories and patch information. Affected products include: Freescout Freescout.