GitHub Advisoryadvisory · Go

GHSA-xpg8-8xpv-948p Mattermost does not enforce MFA on WebSocket connections

MEDIUM Published 2025-11-14 Modified 2025-11-17 Official page ↗
Aliases
CVE-2025-55070
Ecosystem
Go
Packages
github.com/mattermost/mattermost-server, github.com/mattermost/mattermost/server/v8
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weaknesses
CWE-306
Reviewed
2025-11-17

Affected packages

• Go github.com/mattermost/mattermost-server: < 11.1.0 → fixed in 11.1.0 • Go github.com/mattermost/mattermost/server/v8: < 8.0.0-20250912063506-7d8b7b5e4a60 → fixed in 8.0.0-20250912063506-7d8b7b5e4a60

Description

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

Related

Alias · CVE (1)

  • CVE-2025-55070 Mattermost versions <11 fail to enforce multi-factor authentication on WebSocket connections which allows unauthenticated users to access… vulnerability

Weakness · CWE (1)

  • CWE-306 Missing Authentication for Critical Functionality weakness

References