High severity · published May 7, 2026
CVE-2026-41906
FreeScout: Conversation Change-Customer Cross-Mailbox Authorization Bypass
7.1
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 6% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FR
freescout · freescout-help-desk
< 1.8.214 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-41906
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-41906
github.com
https://github.com/freescout-help-desk/freescout/releases/tag/1.8.214
github.com
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-p6hg-2cwg-rrx9
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