CVE-2026-39384 Details
Description
FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to 1.8.212, FreeScout does not take the limit_user_customer_visibility parameter into account when merging customers. This vulnerability is fixed in 1.8.212.
A cross-mailbox authorization bypass vulnerability has been identified in FreeScout, a help desk and shared inbox application built on PHP's Laravel framework. This vulnerability affects versions prior to 1.8.212. The issue arises because the application does not properly consider the 'limit_user_customer_visibility' parameter when merging customers. As a result, non-admin users can merge customers from mailboxes they should not have access to, leading to unauthorized data manipulation.
Users should update FreeScout to version 1.8.212 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 9, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-j6v9-22vq-53vh | CISA-ADP | ExploitVendor Advisory |
| https://github.com/freescout-help-desk/freescout/commit/b395a1179117af5e2df704c6bad71feeb301b4ce | [email protected] | Patch |
| https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-j6v9-22vq-53vh | [email protected] | ExploitVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-639 | Authorization Bypass Through User-Controlled Key | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| freescout freescout | < 1.8.212 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 24, 2026 | Initial Analysis | [email protected] |
| Apr 9, 2026 | CVE Modified | CISA-ADP |
| Apr 7, 2026 | New CVE Received | [email protected] |