CVE-2025-4128CWE-863

Mattermost Guest User Information Disclosure Vulnerability

Low · published June 11, 2025

CVSS v3.1
3.1
EPSS
0%
Percentile
12.0
In the wild
Unconfirmed
What it is

Mattermost versions 10.5.x <= 10.5.4, 9.11.x <= 9.11.13 fail to properly restrict API access to team information, allowing guest users to bypass permissions and view information about public teams they are not members of via a direct API call to /api/v4/teams/{team_id}.

The record
Technical detail
CVSS v3.1
3.1 · LOW
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00222 · 12.0th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2025-06-11T10:25Z
EPSS history
Timeline
  • 11 JUN 10:25Z
    Mattermost Guest User Information Disclosure Vulnerability
    cvelistv5