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OpenAdvisories
High · 7.6 CVE-2026-40589 EUVD-2026-24184

FreeScout has Customer Edit Cross-Mailbox Email Takeover

Published Apr 21, 2026 · Updated Apr 21, 2026 · Assigned by GitHub_M

Description

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.214, a low-privileged agent can edit a visible customer and add an email address already owned by a hidden customer in another mailbox. The server discloses the hidden customer’s name and profile URL in the success flash, reassigns the hidden email to the visible customer, and rebinds hidden-mailbox conversations for that email to the visible customer. Version 1.8.214 fixes the issue.

Affected products

VendorProductAffectedFixed
freescout-help-desk freescout < 1.8.214 —

References