CVE-2026-27637
Last modified
CVE-2026-27637 is a critical-severity vulnerability rated 9.8/10 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 `TokenAuth` middleware uses a predictable authentication token computed as `MD5(user_id + created_at + APP_KEY)`. EPSS estimates a 0.67% 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 `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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Freescout | Freescout | < 1.8.206 |
References
- https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-6gcm-v8xf-j9v9Exploit, Vendor Advisory
- https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-6gcm-v8xf-j9v9Exploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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