CVE-2025-47871 – github.com/mattermost/mattermost-server

Package

Manager: go
Name: github.com/mattermost/mattermost-server
Vulnerable Version: >=0 <0.0.0-20250513065225-4ae5d647fb88

Severity

Level: Medium

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

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

EPSS: 0.0004 pctl0.11001

Details

Mattermost Incorrect Authorization vulnerability Mattermost versions 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, 10.6.x <= 10.6.5 fail to properly validate channel membership when retrieving playbook run metadata, allowing authenticated users who are playbook members but not channel members to access sensitive information about linked private channels including channel name, display name, and participant count through the run metadata API endpoint.

Metadata

Created: 2025-06-30T18:31:50Z
Modified: 2025-06-30T20:40:41Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/06/GHSA-wgvp-jj4w-88hf/GHSA-wgvp-jj4w-88hf.json
CWE IDs: ["CWE-863"]
Alternative ID: GHSA-wgvp-jj4w-88hf
Finding: F006
Auto approve: 1