CVE-2025-8402 – github.com/mattermost/mattermost-server

Package

Manager: go
Name: github.com/mattermost/mattermost-server
Vulnerable Version: >=10.8.0 <10.8.4 || >=10.5.0 <10.5.9 || >=10.9.0 <10.9.4 || =10.10.0 || >=10.10.0 <10.10.1 || >=9.11.0 <9.11.18

Severity

Level: Medium

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

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

EPSS: 0.00074 pctl0.23084

Details

Mattermost has Potential Server Crash due to Unvalidated Import Data Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.10.x <= 10.10.0, 10.9.x <= 10.9.3 fail to validate import data which allows a system admin to crash the server via the bulk import feature.

Metadata

Created: 2025-08-21T18:31:29Z
Modified: 2025-08-29T21:02:12Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/08/GHSA-h469-4fcf-p23h/GHSA-h469-4fcf-p23h.json
CWE IDs: ["CWE-476"]
Alternative ID: GHSA-h469-4fcf-p23h
Finding: F002
Auto approve: 1