CVE-2026-7184 MEDIUM

CVE-2026-7184: Mattermost Remote Cluster PATCH API Leaks Authentication Tokens

Vendor Mattermost
Product Mattermost
Weakness CWE-201
Published June 12, 2026
Last update June 12, 2026
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Mattermost versions 11.6.x <= 11.6.1, 11.5.x <= 11.5.4, 10.11.x <= 10.11.15 fail to sanitize the Remote Cluster API response on PATCH operations, which allows authenticated users with the {{manage_secure_connections}} permission to obtain remote cluster authentication tokens via a PATCH request to the remote cluster endpoint.. Mattermost Advisory ID: MMSA-2026-00662

Key dates

02Disclosure timeline

June 12, 2026 CVE published
June 12, 2026 Record updated

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