CVE-2025-27715

Mattermost versions 9.11.x <= 9.11.8 fail to prompt for explicit approval before adding a team admin to a private channel, which team admins to joining private channels via crafted permalink links without explicit consent from them.

CVSS v3 3.3 LOW

3.3^/10

CVSS v3 : LOW

Vector :

Exploitability : 0.7 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required HIGH

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)

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

History

27 Mar 2025, 15:01

Type	Values Removed	Values Added
First Time		Mattermost Mattermost mattermost Server
Summary		(es) Las versiones 9.11.x <= 9.11.8 de Mattermost no solicitan aprobación explícita antes de agregar un administrador de equipo a un canal privado, lo que provoca que los administradores de equipo se unan a canales privados a través de enlaces permanentes manipulados sin su consentimiento explícito.
References	~~() https://mattermost.com/security-updates -~~	() https://mattermost.com/security-updates - Vendor Advisory
CPE		cpe:2.3:a:mattermost:mattermost_server::::::::

21 Mar 2025, 09:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-03-21 09:15

Updated : 2025-03-27 15:01

NVD link : CVE-2025-27715

Mitre link : CVE-2025-27715

CVE.ORG link : CVE-2025-27715

JSON object : View

Products Affected

mattermost

mattermost_server

CWE

CWE-863

Incorrect Authorization

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