CVE-2025-55070 - Vulnerability Details - OpenCVE

Mattermost versions <11 fail to enforce multi-factor authentication on WebSocket connections which allows unauthenticated users to access sensitive information via WebSocket events

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Mattermost	Mattermost Mattermost Server

Configuration 1 [-]

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

No data.

References

Link	Providers
https://mattermost.com/security-updates

History

Mon, 17 Nov 2025 18:00:00 +0000

Type	Values Removed	Values Added
First Time appeared		Mattermost mattermost Server
CPEs		cpe:2.3:a:mattermost:mattermost_server::::::::
Vendors & Products		Mattermost mattermost Server

Sat, 15 Nov 2025 21:30:00 +0000

Type	Values Removed	Values Added
First Time appeared		Mattermost Mattermost mattermost
Vendors & Products		Mattermost Mattermost mattermost

Fri, 14 Nov 2025 16:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Fri, 14 Nov 2025 08:15:00 +0000

Type	Values Removed	Values Added
Description		Mattermost versions <11 fail to enforce multi-factor authentication on WebSocket connections which allows unauthenticated users to access sensitive information via WebSocket events
Title		Lack of MFA enforcement in WebSocket connections
Weaknesses		CWE-306
References		https://mattermost.com/security-updates
Metrics		cvssV3_1 `{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}`

MITRE

Status: PUBLISHED

Assigner: Mattermost

Published: 2025-11-14T08:02:24.764Z

Updated: 2025-11-14T15:47:52.338Z

Reserved: 2025-10-15T11:42:23.807Z

Link: CVE-2025-55070

Vulnrichment

Updated: 2025-11-14T15:47:46.734Z

NVD

Status : Analyzed

Published: 2025-11-14T08:15:45.500

Modified: 2025-11-17T17:51:05.737

Link: CVE-2025-55070

Redhat

No data.

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