cvedb.io
CVE-2026-40591
HIGH · CVSS 7.1
EPSS exploitation probability: 0%
Published 2026-04-21T17:16:56.940 · Last modified 2026-06-17T10:45:29.997

Summary

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.214, the phone-conversation creation flow accepts attacker-controlled `customer_id`, `name`, `to_email`, and `phone` values and resolves the target customer in the backend without enforcing mailbox-scoped customer visibility. As a result, a low-privileged agent who can create a phone conversation in Mailbox A can bind the new Mailbox A phone conversation to a hidden customer from Mailbox B and add a new alias email to that hidden customer record by supplying `to_email`. 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.