CVE-2026-2299
MEDIUM
NVD
CVSS Score
4.2
Severity
MEDIUM
Published
Jun 25, 2026
Vendor
unknown
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.