CVE-2024-4198

mattermost: fail to fully validate role changes which allows an attacker authenticated as team admin to demote users to guest

Published Apr 26, 2024 CVSS 3.1 · 2.7 Low EPSS < 1% KEV · Not listed
Description
Mattermost versions 9.6.0, 9.5.x before 9.5.3, and 8.1.x before 8.1.12 fail to fully validate role changes which allows an attacker authenticated as team admin to demote users to guest via crafted HTTP requests.

Remediation

Vendor Solution

Update Mattermost Server to versions 9.7.0, 9.6.1, 9.5.3, 8.1.12 or higher.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2024-1107 Mattermost versions 9.6.0, 9.5.x before 9.5.3, and 8.1.x before 8.1.12 fail to fully validate role changes which allows an attacker authenticated as team admin to demote users to guest via crafted HTTP requests.
Github GHSA Github GHSA GHSA-5qx9-9ffj-5r8f Mattermost fails to fully validate role changes
History
Type Values Removed Values Added
First Time appeared Mattermost
Mattermost mattermost Server
Weaknesses NVD-CWE-noinfo
CPEs cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
cpe:2.3:a:mattermost:mattermost_server:9.6.0:-:*:*:*:*:*:*
cpe:2.3:a:mattermost:mattermost_server:9.6.0:rc1:*:*:*:*:*:*
cpe:2.3:a:mattermost:mattermost_server:9.6.0:rc2:*:*:*:*:*:*
cpe:2.3:a:mattermost:mattermost_server:9.6.0:rc3:*:*:*:*:*:*
Vendors & Products Mattermost
Mattermost mattermost Server
Weaknesses

Sources

Status
PUBLISHED
Assigner
Mattermost
Published
Updated
Aug 1, 2024, 8:33 PM
Reserved
Apr 25, 2024, 4:39 PM
Status
Analyzed
Published
Apr 26, 2024, 9:15 AM
Modified
Jun 17, 2026, 8:01 AM
Severity
Low
Public date
Apr 26, 2024, 12:00 AM