CVE-2026-41191

HIGH7.1

FreeScout's signature only mailbox permission allows unauthorized mailbox chat setting changes

Published Apr 21, 2026

Modified Yesterday

Details

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.215, MailboxesController::updateSave() persists chat_start_new outside the allowed-field filter. A user with only the mailbox sig permission sees only the signature field in the UI, but can still change the hidden mailbox-wide chat setting via direct POST. Version 1.8.215 fixes the vulnerability.

References

WEB

https://github.com/freescout-help-desk/freescout/commit/fb130de64e1c830d85dd6988eaa08d725a7be954

WEB

https://github.com/freescout-help-desk/freescout/releases/tag/1.8.215

WEB

https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-wpv9-c2gv-2j82

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-41191

CVSS Analysis

CVSS v3.1

7.1