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

Vendors Products
Mattermost Subscribe
Mattermost Subscribe
Mattermost Desktop Subscribe
Advisories

No advisories yet.

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

Tue, 13 Oct 2026 12:15:00 +0000

Type Values Removed Values Added
First Time appeared Mattermost mattermost Desktop
CPEs cpe:2.3:a:mattermost:mattermost_desktop:*:*:*:*:*:*:*:*
Vendors & Products Mattermost mattermost Desktop

Fri, 18 Sep 2026 05:15:00 +0000

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

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

Sign in to view the affected projects.

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 : Analyzed

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

Modified: 2026-10-13T12:05:18.823

Link: CVE-2026-75025

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-18T05:00:03Z

Weaknesses