CVE-2025-55070CWE-306

CVE-2025-55070

Medium · published November 14, 2025

CVSS v3.1
6.5
EPSS
0%
Percentile
23.1
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00315 · 23.1th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2025-11-14T13:15Z
Affected products (1)
ProductVersionsFixed in
mattermost/mattermost_server< 11.0.011.0.0
References (1)
https://mattermost.com/security-updates · [email protected]
EPSS history
Timeline
  • 14 NOV 08:02Z
    Lack of MFA enforcement in WebSocket connections
    cvelistv5