CVE-2026-41906CWE-639

FreeScout: Conversation Change-Customer Cross-Mailbox Authorization Bypass

High · published May 7, 2026

CVSS v3.1
7.1
EPSS
0%
Percentile
20.3
In the wild
Unconfirmed
What it is

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.214, the Change Customer modal correctly hides out-of-scope customers through the mailbox-filtered search endpoint, but the backend conversation_change_customer action accepts any supplied customer_email. A low-privileged agent can forge a request and bind a visible conversation to a hidden customer in another mailbox. This issue has been patched in version 1.8.214.

The record
Technical detail
CVSS v3.1
7.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00288 · 20.3th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-05-07T18:09Z
EPSS history
Timeline
  • 07 MAY 18:09Z
    FreeScout: Conversation Change-Customer Cross-Mailbox Authorization Bypass
    cvelistv5