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CVE-2026-41189

FreeScout has assigned-only visibility bypass that allows editing hidden customer-authored threads

Published: Apr 21, 2026Updated: Apr 22, 2026 Sources: CVE List NVDCWE-863
NVD MITRE
7.1CVSSHIGH
EPSS Score
0.2%
Top 87.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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 Breakdown

AV:NAC:LPR:LUI:NS:UC:LI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-863

Affected Products

freescoutfreescout-help-desk
On-premWeb App
Enterprise Software / itsm-monitoring
freescout-help-deskcommercialEnterprise Software

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-4h5p-7f5c-q7gj
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

Timeline

Published
Apr 21, 2026
Last Updated
Apr 22, 2026

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