High severity · published Apr 21, 2026
CVE-2026-41189
FreeScout has assigned-only visibility bypass that allows editing hidden customer-authored threads
7.1
CVSS
0.2%
EPSS
No
On KEV
Description
FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.215, customer-thread editing is authorized through `ThreadPolicy::edit()`, which checks mailbox access but does not apply the assigned-only restriction from `ConversationPolicy`. A user who cannot view a conversation can still load and edit customer-authored threads inside it. Version 1.8.215 fixes the vulnerability.
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 13% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FR
freescout · freescout-help-desk
< 1.8.215 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-41189
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-41189
github.com
https://github.com/freescout-help-desk/freescout/commit/cdadaf621bb1e1d017315df20d743671f7eae7a9
github.com
https://github.com/freescout-help-desk/freescout/releases/tag/1.8.215
github.com
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-4h5p-7f5c-q7gj
More from freescout
9.8
CVE-2026-40498
FreeScout has Authentication Bypass and Information Disclosure in SystemController via /system/cron
9.8
CVE-2026-27637
FreeScout's Predictable Authentication Token Enables Account Takeover
9.8
CVE-2025-48481
FreeScout Has Business Logic Errors
9.8
CVE-2025-48471
FreeScout Vulnerable to Arbitrary File Upload
9.4
CVE-2026-53595
FreeScout vulnerable to anonymous account takeover via /user-setup empty invite_hash on MySQL