Mattermost versions 11.4.x <= 11.4.0, 11.3.x <= 11.3.1, 11.2.x <= 11.2.3, 10.11.x <= 10.11.11 fail to set permissions on downloaded bulk export which allows other local users on the server to be able to read contents of the bulk export.. Mattermost Advisory ID: MMSA-2026-00593

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Advisories

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Fixes

Solution

Update Mattermost to versions 11.5.0, 11.4.1, 11.3.2, 11.2.4, 10.11.12 or higher.


Workaround

No workaround given by the vendor.

References
History

Mon, 30 Mar 2026 19:45:00 +0000

Type Values Removed Values Added
First Time appeared Mattermost mattermost Server
CPEs cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
cpe:2.3:a:mattermost:mattermost_server:11.4.0:*:*:*:*:*:*:*
Vendors & Products Mattermost mattermost Server

Fri, 27 Mar 2026 08:45:00 +0000

Type Values Removed Values Added
First Time appeared Mattermost
Mattermost mattermost
Vendors & Products Mattermost
Mattermost mattermost

Thu, 26 Mar 2026 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Thu, 26 Mar 2026 16:45:00 +0000

Type Values Removed Values Added
Description Mattermost versions 11.4.x <= 11.4.0, 11.3.x <= 11.3.1, 11.2.x <= 11.2.3, 10.11.x <= 10.11.11 fail to set permissions on downloaded bulk export which allows other local users on the server to be able to read contents of the bulk export.. Mattermost Advisory ID: MMSA-2026-00593
Title mmctl export download command doesn’t restrict permissions to created file to file owner
Weaknesses CWE-732
References
Metrics cvssV3_1

{'score': 5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Mattermost

Published:

Updated: 2026-03-26T17:51:15.160Z

Reserved: 2026-02-24T10:59:55.681Z

Link: CVE-2026-3113

cve-icon Vulnrichment

Updated: 2026-03-26T17:47:41.119Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-26T17:16:42.307

Modified: 2026-03-30T19:41:30.957

Link: CVE-2026-3113

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-27T09:26:25Z

Weaknesses