Security Advisory

CVE-2026-2299

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-06-25 18:55:11

Last updated 2026-06-26 14:05:09

Assigner Mattermost

CVSS score 4.2

State PUBLISHED

Description

The Mattermost Google Drive plugin before version 1.1.0 fails to validate channel membership in the file creation endpoint, allowing authenticated users with a connected Google account to share Google Drive files to unauthorized private channels and disclose private channel membership.

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