Latest medium severity vulnerabilities for "mattermost mattermost desktop" 6.1.0

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Mattermost Mattermost Desktop AppOverly long URLs crash the Mattermost Desktop App

Risk 27

Severity

6.5

EPSS

0.20%

AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Mattermost Desktop App versions <=6.1 5.5.13.0 fail to account for attempting to open extremely long URLs in the Mattermost Desktop App which allows a malicious server owner to crash the application via including a script to call window.open on a very large URL. Mattermost Advisory ID: MMSA-2026-00652

First published (updated )

CVE-2026-8683

Mattermost Mattermost Desktop AppOpening a window with {{javascript:alert()}} as URL causes crash in the Mattermost Desktop App

Risk 37

Severity

6.5

AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Mattermost Desktop App versions <=6.1 6.0.1 5.4.13.0 fail to prevent an invalid URL from loading in a pop-up window in the Mattermost Desktop App which allows a malicious server owner to repeated crash the application via calling {{window.open('javascript:alert()');}}. Mattermost Advisory ID: MMSA-2026-00618

Remedy

Update Mattermost Desktop App to versions 6.2.0, 6.1.1.0, 5.13.5.0 or higher.

First published (updated )

CVE-2026-3471

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SecAlerts Pty Ltd.
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Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

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