CVE-2026-40590: FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.214, the Change Customer modal exposes a “Create a new customer” flow via…

PriorityP423medium4.3CVSS 3.1

AVNACLPRLUINSUCNILAN

EPSS

0.21%

11.6th percentile

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.214, the Change Customer modal exposes a “Create a new customer” flow via POST /customers/ajax with action=create. Under limited visibility, the endpoint drops unique-email validation. If the supplied email already belongs to a hidden customer, Customer::create() reuses that hidden customer object and fills empty profile fields from attacker-controlled input. Version 1.8.214 fixes the vulnerability.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
freescout-help-desk	freescout	< 1.8.214	1.8.214

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