CVE-2026-41906

FreeScout: Conversation Change-Customer Cross-Mailbox Authorization Bypass

Published May 7, 2026 CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Freescout Helpdesk
Freescout Helpdesk freescout
Vendors & Products Freescout Helpdesk
Freescout Helpdesk freescout
Type Values Removed Values Added
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.
Title FreeScout: Conversation Change-Customer Cross-Mailbox Authorization Bypass
Weaknesses CWE-639
References
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
May 8, 2026, 2:19 PM
Reserved
Apr 22, 2026, 3:11 PM
Status
Deferred
Published
May 7, 2026, 7:16 PM
Modified
Jun 17, 2026, 10:47 AM