CVE-2025-4128 – github.com/mattermost/mattermost-server

Package

Manager: go
Name: github.com/mattermost/mattermost-server
Vulnerable Version: >=10.5.0 <10.5.5 || >=9.11.0 <9.11.14

Severity

Level: Low

CVSS v3.1: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

EPSS: 0.00032 pctl0.0771

Details

Mattermost allows guest users to view information about public teams they are not members of 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}.

Metadata

Created: 2025-06-11T12:30:36Z
Modified: 2025-06-11T15:44:39Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/06/GHSA-jwhw-xf5v-qgxc/GHSA-jwhw-xf5v-qgxc.json
CWE IDs: ["CWE-863"]
Alternative ID: GHSA-jwhw-xf5v-qgxc
Finding: F006
Auto approve: 1