Mattermost fails to update the permissions of the current session for a user who was just demoted to guest, allowing freshly demoted guests to change group names.

Advisories
Source ID Title
EUVD EUVD EUVD-2024-0319 Mattermost fails to update the permissions of the current session for a user who was just demoted to guest, allowing freshly demoted guests to change group names.
Github GHSA Github GHSA GHSA-9w97-9rqx-8v4j Mattermost allows demoted guests to change group names
Fixes

Solution

Update Mattermost Server to versions 8.1.7, 9.3.0 or higher.


Workaround

No workaround given by the vendor.

References
History

Tue, 17 Jun 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Mattermost

Published:

Updated: 2025-06-17T13:35:30.706Z

Reserved: 2023-12-21T08:00:43.432Z

Link: CVE-2023-50333

cve-icon Vulnrichment

Updated: 2024-08-02T22:16:46.618Z

cve-icon NVD

Status : Modified

Published: 2024-01-02T10:15:08.723

Modified: 2024-11-21T08:36:51.637

Link: CVE-2023-50333

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.