CVE-2023-47865

Username and Icon override can be used by members when Hardened Mode is enabled

Published Nov 27, 2023 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Description
Mattermost fails to check if hardened mode is enabled when overriding the username and/or the icon when posting a post. If settings allowed integrations to override the username and profile picture when posting, a member could also override the username and icon when making a post even if the Hardened Mode setting was enabled

Remediation

Vendor Solution

Update Mattermost Server to versions 7.8.13, 8.1.4 or higher.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2023-2989 Mattermost fails to check if hardened mode is enabled when overriding the username and/or the icon when posting a post. If settings allowed integrations to override the username and profile picture when posting, a member could also override the username and icon when making a post even if the Hardened Mode setting was enabled
Github GHSA Github GHSA GHSA-jj46-9cgh-qmfx Mattermost Improper Access Control vulnerability
References
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
Mattermost
Published
Updated
Aug 2, 2024, 9:16 PM
Reserved
Nov 22, 2023, 11:37 AM
Status
Modified
Published
Nov 27, 2023, 9:15 AM
Modified
Jun 17, 2026, 6:33 AM