CVE-2025-8402

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CVSS 3.1

4.9 medium

EPSS

<1%p25

Published

Aug 21, 2025 (Aug 21, 2025)

Modified

Jun 17, 2026

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.

Vendors: mattermost
Products: mattermost server
Weakness: CWE-476, CWE-1287
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (0.3%)

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