CVE-2026-2299

Published: Jun 25, 2026Modified: Jun 26, 2026

4.2

Vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Exploitability: 1.6 / Impact: 2.5

Source: responsibledisclosure@mattermost.com (Secondary)

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.

Related CWEs

CWE-862

Missing Authorization

The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

References (1)

https://github.com/mattermost/mattermost-plugin-google-drive/releases/tag/v1.1.0

Source: responsibledisclosure@mattermost.com

Timeline

No history available yet.