VULNERABILITY INTELLIGENCE

CVE-2025-8402

CVSS score4.9 MEDIUM

EPSS probability0.32%

CISA KEVNot currently listed

Published2025-08-21

Last modified2026-06-17

Description

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.