CVE-2025-8402

MediumCVSS 4.9/10Last 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.

Metrics

CVSS 3.1 4.9/10CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-476 CWE-1287

Affected software

No affected versions have been published.

Timeline

Published: Aug 21, 2025
Last modified: Jun 17, 2026
NVD status: Analyzed

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