VULNERABILITY INTELLIGENCE

CVE-2026-2299

CVSS score4.2 MEDIUM
EPSS probability0.20%
CISA KEVNot currently listed
Published2026-06-25
Last modified2026-10-25
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

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.

Weakness classification

  • CWE-862: Missing Authorization

Primary references