CVE-2026-40592: FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.214, the undo-send route `GET /conversation/undo-reply/{thread_id}` checks…

PriorityP433medium5.9CVSS 3.1

AVNACHPRLUINSUCNIHAL

EPSS

0.24%

14.7th percentile

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.214, the undo-send route `GET /conversation/undo-reply/{thread_id}` checks only whether the current user can view the parent conversation. It does not verify that the current user created the reply being undone. In a shared mailbox, one agent can therefore recall another agent's just-sent reply during the 15-second undo window. 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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