CVE-2025-55070 MEDIUM

CVE-2025-55070: Lack of MFA enforcement in WebSocket connections

Vendor Mattermost
Product Mattermost
Weakness CWE-306 · Missing auth
Published November 14, 2025
Last update November 14, 2025
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

What the vulnerability does

01Description

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

Key dates

02Disclosure timeline

November 14, 2025 CVE published
November 14, 2025 Record updated