CVE-2026-2299

FAUCET Score

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.

First published: Jun 25, 2026Last modified: Jun 25, 2026

Impacted Technologies

Vendor	Product	Version(s)	CPE
Mattermost	Mattermost Google Drive Plugin	>= 0, <= 1.0.0CNA affecteddefault unaffected

CVSS Data

CVSS version used by this source: 3.1

4.2MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

Exploitability Score

1.6

Impact Score

2.5

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.12%

Probability of exploitation in next 30 days

EPSS Percentile

2.1%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0012 is in the 1st percentile among its peer group of 1,428 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

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