VulnerabilityAnalyzed
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…
MEDIUM 4.3EPSS 0.12%
Does this matter?
Lower severity and a low EPSS score (0.12%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 0.12% probability · 2th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-862
- Affected
- mattermost/google drive
- Source
- responsibledisclosure@mattermost.com
References
- https://github.com/mattermost/mattermost-plugin-google-drive/releases/tag/v1.1.0Product, Release Notes
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.