Vulnerability Description
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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/freescout-help-desk/freescout/commit/c779afdda86fa00a4b85779e
- https://github.com/freescout-help-desk/freescout/releases/tag/1.8.214
- https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-674v-r
FAQ
What is CVE-2026-40592?
CVE-2026-40592 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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...
How severe is CVE-2026-40592?
CVE-2026-40592 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-40592?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.