CVE-2026-2299

MediumCVSS 4.3/10Last modified Aug 11, 2026

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.

Metrics

CVSS 3.1 4.3/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Weakness enumeration

CWE-862

Affected software

No affected versions have been published.

Timeline

Published
Jun 25, 2026
Last modified
Aug 11, 2026
NVD status
Analyzed

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CVE-2026-2299: Medium severity, CVSS 4.3 | Vulnix