Mattermost Desktop App versions <=6.2 6.2.2.0 Fixed an issue where Mattermost Desktop did not sufficiently restrict server-rendered content from accessing local or private network resources. Thanks to game0v3r for contributing to this improvement under the Mattermost responsible disclosure policy. Mattermost Advisory ID: MMSA-2026-00698

Project Subscriptions

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Advisories

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Fixes

Solution

Update Mattermost Desktop App to versions 6.3.0, 6.2.3.0 or higher.


Workaround

No workaround given by the vendor.

References
History

Thu, 17 Sep 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Wed, 16 Sep 2026 18:45:00 +0000

Type Values Removed Values Added
Description Mattermost Desktop App versions <=6.2 6.2.2.0 Fixed an issue where Mattermost Desktop did not sufficiently restrict server-rendered content from accessing local or private network resources. Thanks to game0v3r for contributing to this improvement under the Mattermost responsible disclosure policy. Mattermost Advisory ID: MMSA-2026-00698
Title Mattermost Desktop local network access from server-rendered content
Weaknesses CWE-346
References
Metrics cvssV3_1

{'score': 4.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Mattermost

Published:

Updated: 2026-09-17T18:35:23.288Z

Reserved: 2026-08-17T14:33:41.253Z

Link: CVE-2026-75025

cve-icon Vulnrichment

Updated: 2026-09-17T18:35:11.795Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-16T19:17:33.430

Modified: 2026-09-17T19:16:57.850

Link: CVE-2026-75025

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses