High severity · published Apr 7, 2026
CVE-2026-39384
FreeScout Customer Merge Cross-Mailbox Authorization Bypass
7.6
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 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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
High
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FR
freescout · freescout-help-desk
< 1.8.212 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-39384
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-39384
Patch
https://github.com/freescout-help-desk/freescout/commit/b395a1179117af5e2df704c6bad71feeb301b4ce
Exploit
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-j6v9-22vq-53vh
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