CVE-2026-41906

HIGH

FreeScout: Conversation Change-Customer Cross-Mailbox Authorization Bypass

Title source: cna

Description

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.

References (2)

Core 2

Core References

X_Refsource_Confirm x_refsource_confirm

https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-p6hg-2cwg-rrx9

X_Refsource_Misc x_refsource_misc

https://github.com/freescout-help-desk/freescout/releases/tag/1.8.214

Scores

CVSS v3 7.1

EPSS 0.0017

EPSS Percentile 6.4%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact partial

Details

CWE

CWE-639

Status published

Products (1)

freescout-help-desk/freescout < 1.8.214

Published May 07, 2026

Tracked Since May 08, 2026