CVE-2025-9081

Mattermost versions 10.5.x <= 10.5.8, 9.11.x <= 9.11.17 fail to properly validate access controls which allows any authenticated user to download sensitive files via board file download endpoint using UUID enumeration

CVSS v3 3.1 LOW

3.1^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.6 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://mattermost.com/security-updates	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mattermost:mattermost_server::::::::
	cpe:2.3:a:mattermost:mattermost_server::::::::

History

19 Oct 2026, 16:10

Type	Values Removed	Values Added
Summary		(es) Las versiones de Mattermost 10.5.x menor o igual que 10.5.8, 9.11.x menor o igual que 9.11.17 no validan correctamente los controles de acceso, lo que permite a cualquier usuario autenticado descargar archivos sensibles a través del endpoint de descarga de archivos de la pizarra mediante enumeración de UUID.

Information

Published : 2025-09-19 20:15

Updated : 2026-10-19 16:10

NVD link : CVE-2025-9081

Mitre link : CVE-2025-9081

CVE.ORG link : CVE-2025-9081

JSON object : View

Products Affected

mattermost

mattermost_server

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

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