CVE-2026-41194CWE-352

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

Medium · published April 21, 2026

CVSS v3.1
5.4
EPSS
0%
Percentile
7.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00178 · 7.0th percentile
Weakness
CWE-352 · Cross-Site Request Forgery (CSRF)
Published
2026-04-21T17:16Z
EPSS history
Timeline
  • 21 APR 17:16Z
    FreeScout's Mailbox OAuth disconnect uses a state-changing GET and is CSRFable
    cvelistv5