CVE-2026-2299
Medium · 4.2CVSS
4.2
EPSS
0.2%
Published
Jun 25, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|
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