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CVE-2026-27637

CRITICAL Exploitation: PoC
9.8
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-27637
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-02-20 22:02 UTC
Published
2026-02-25 03:41 UTC
Last updated
2026-02-25 15:21 UTC
Primary CWE
CWE-330
CWE-330: Use of Insufficiently Random Values
Vendor / Product
freescout-help-desk / freescout
Sources
cve.org  ·  NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC — CISA Coordinator
Exploitation
PoC
Automatable
yes
Tech. Impact
total
Affected products (1)
VendorProductPlatformVersions
freescout-help-desk freescout — < 1.8.206
Weakness (CWE)
CWESourceDescription
CWE-330 cna CWE-330: Use of Insufficiently Random Values
CVSS scores (1)
ScoreSeverityVersionSourceVector
9.8 CRITICAL 3.1 cna CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References (3)
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