Mattermost versions <11 fail to enforce multi-factor authentication on WebSocket connections which allows unauthenticated users to access sensitive information via WebSocket events
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-xpg8-8xpv-948p Mattermost does not enforce MFA on WebSocket connections
Fixes

Solution

Update Mattermost to versions 11.0.0 or higher.


Workaround

No workaround given by the vendor.

References
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
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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Mattermost

Published:

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

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

Link: CVE-2025-55070

cve-icon Vulnrichment

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

cve-icon NVD

Status : Analyzed

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

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

Link: CVE-2025-55070

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-11-15T21:25:35Z

Weaknesses