cvedb.io
CVE-2026-40590
MEDIUM · CVSS 4.3
EPSS exploitation probability: 0%
Published 2026-04-21T17:16:56.803 · Last modified 2026-06-17T10:45:29.893

Summary

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.

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.