CVE-2026-41194

MEDIUM5.4

FreeScout's Mailbox OAuth disconnect uses a state-changing GET and is CSRFable

Published Apr 21, 2026

Modified 2 days ago

Details

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.215, the mailbox OAuth disconnect action is implemented as GET /mailbox/oauth-disconnect/{id}/{in_out}/{provider}. It removes stored OAuth metadata from the mailbox and then redirects. Because it is a GET route, no CSRF token is required and the action can be triggered cross-site against a logged-in mailbox admin. Version 1.8.215 fixes the vulnerability.

References

WEB

https://github.com/freescout-help-desk/freescout/commit/eb397efae2086524ba0ee91abb916de8db7a4ac1

WEB

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

WEB

https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-6rvw-fhqx-cfv5

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-41194

CVSS Analysis

CVSS v3.1

5.4