CVE-2025-13324

Mattermost versions 10.11.x <= 10.11.5, 11.0.x <= 11.0.4, 10.12.x <= 10.12.2 fail to invalidate remote cluster invite tokens when using the legacy (version 1) protocol or when the confirming party does not provide a refreshed token, which allows an attacker who has obtained an invite token to authenticate as the remote cluster and perform limited actions on shared channels even after the invitation has been legitimately confirmed.

CVSS v3 3.7 LOW

3.7^/10

CVSS v3 : LOW

Vector :

Exploitability : 2.2 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

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

13 Oct 2026, 11:10

Type	Values Removed	Values Added
Summary		(es) Las versiones de Mattermost 10.11.x menor o igual que 10.11.5, 11.0.x menor o igual que 11.0.4, 10.12.x menor o igual que 10.12.2 no invalidan los tokens de invitación de clúster remoto cuando se utiliza el protocolo heredado (versión 1) o cuando la parte confirmante no proporciona un token actualizado, lo que permite a un atacante que ha obtenido un token de invitación autenticarse como el clúster remoto y realizar acciones limitadas en canales compartidos incluso después de que la invitación haya sido confirmada legítimamente.

Information

Published : 2025-12-17 19:16

Updated : 2026-10-13 11:10

NVD link : CVE-2025-13324

Mitre link : CVE-2025-13324

CVE.ORG link : CVE-2025-13324

JSON object : View

Products Affected

mattermost

mattermost_server

CWE

CWE-863

Incorrect Authorization

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