CVE-2026-40592
MEDIUMFreeScout's cross-user undo reply allows mailbox peers to recall another agent's outbound reply
Title source: cnaDescription
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.
Scores
CVSS v3
5.9
EPSS
0.0003
EPSS Percentile
9.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L
Details
CWE
CWE-862
Status
published
Products (1)
freescout-help-desk/freescout
< 1.8.214
Published
Apr 21, 2026
Tracked Since
Apr 21, 2026