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CVE PROGRAM SOURCE RECORD4.2 Medium

CVE-2026-2299

Improper Access Control in Mattermost Google Drive Plugin File Creation Endpoint

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Mattermost Mattermost Google Drive Plugin

Default version status: unaffected

  • 0 to ≤ 1.0.0affected
  • 1.1.0unaffected

References