Security Advisory

CVE-2025-49222

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2025-08-21 07:59:45

Last updated 2025-08-21 13:57:13

Assigner Mattermost

CVSS score 6.8

State PUBLISHED

Description

Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.9.x <= 10.9.2, 10.10.x <= 10.10.0 fail to validate upload types in remote cluster upload sessions which allows a system admin to upload non-attachment file types via shared channels that could potentially be placed in arbitrary filesystem directories.

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