CVE-2026-2299 — Improper Access Control in Mattermost Google Drive Plugin File Creation Endpoint
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 …
Published: 2026-06-25 · CVSS: 4.2 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7