CVE-2026-2299

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.

CVSS v3 4.2 MEDIUM

4.2^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/mattermost/mattermost-plugin-google-drive/releases/tag/v1.1.0	Product Release Notes

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mattermost:google_drive::::::mattermost::*
	cpe:2.3:a:mattermost:google_drive:1.1.0:rc1::::mattermost::*
	cpe:2.3:a:mattermost:google_drive:1.1.0:rc2::::mattermost::*

History

11 Aug 2026, 14:08

Type	Values Removed	Values Added
References	~~() https://github.com/mattermost/mattermost-plugin-google-drive/releases/tag/v1.1.0 -~~	() https://github.com/mattermost/mattermost-plugin-google-drive/releases/tag/v1.1.0 - Product, Release Notes
First Time		Mattermost Mattermost google Drive
CPE		cpe:2.3:a:mattermost:google_drive::::::mattermost::* cpe:2.3:a:mattermost:google_drive:1.1.0:rc1::::mattermost::* cpe:2.3:a:mattermost:google_drive:1.1.0:rc2::::mattermost::*

25 Jun 2026, 20:20

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-25 20:17

Updated : 2026-08-11 14:08

NVD link : CVE-2026-2299

Mitre link : CVE-2026-2299

CVE.ORG link : CVE-2026-2299

JSON object : View

Products Affected

mattermost

google_drive

CWE

CWE-862

Missing Authorization

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