CVE-2026-40589
HIGHFreeScout has Customer Edit Cross-Mailbox Email Takeover
Title source: cnaDescription
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.
Scores
CVSS v3
7.6
EPSS
0.0003
EPSS Percentile
9.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
Details
CWE
CWE-639
Status
published
Products (1)
freescout-help-desk/freescout
< 1.8.214
Published
Apr 21, 2026
Tracked Since
Apr 21, 2026