CVE-2025-41410

Mattermost versions 10.10.x <= 10.10.2, 10.5.x <= 10.5.10, 10.11.x <= 10.11.2 fail to validate email ownership during Slack import process which allows attackers to create verified user accounts with arbitrary email domains via malicious Slack import data to bypass email-based team access restrictions

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

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

History

19 Oct 2026, 16:10

Type	Values Removed	Values Added
Summary		(es) Las versiones de Mattermost 10.10.x menor o igual que 10.10.2, 10.5.x menor o igual que 10.5.10, 10.11.x menor o igual que 10.11.2 no validan la propiedad del correo electrónico durante el proceso de importación de Slack, lo que permite a los atacantes crear cuentas de usuario verificadas con dominios de correo electrónico arbitrarios mediante datos de importación de Slack maliciosos para eludir las restricciones de acceso a equipos basadas en correo electrónico.

Information

Published : 2025-10-16 09:15

Updated : 2026-10-19 16:10

NVD link : CVE-2025-41410

Mitre link : CVE-2025-41410

CVE.ORG link : CVE-2025-41410

JSON object : View

Products Affected

mattermost

mattermost_server

CWE

CWE-862

Missing Authorization

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