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CVE-2026-2299

MEDIUM
4.2
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-2299
State
PUBLISHED
Assigner
Mattermost
Reserved
2026-02-10 16:46 UTC
Published
2026-06-25 18:55 UTC
Last updated
2026-06-25 18:55 UTC
Primary CWE
CWE-862
CWE-862: Missing Authorization
Vendor / Product
Mattermost / Mattermost Google Drive Plugin
Sources
cve.org  ·  NVD

Severity & Metrics

4.2 MEDIUM CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Affected products (1)
VendorProductPlatformVersions
Mattermost Mattermost Google Drive Plugin — 0 ≤ 1.0.0, 1.1.0
Weakness (CWE)
CWESourceDescription
CWE-862 cna CWE-862: Missing Authorization
CVSS scores (1)
ScoreSeverityVersionSourceVector
4.2 MEDIUM 3.1 cna CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
References (1)
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