CVE-2026-40592
Medium · 5.9CVSS
5.9
EPSS
0.4%
Published
Apr 21, 2026
CISA due date
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The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
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