CVE-2026-4643EPSS p6.7%

CVE-2026-4643CVE-2026-4643

mattermost / mattermost_desktop

Description

Mattermost Desktop App versions <=6.1 6.0.1 5.4.13.0 fail to prevent server-rendered content from closing an underlying application view in the Mattermost Desktop App which allows a malicious server or plugin to crash the desktop client via invoking {{window.close()}} in the renderer context, leading to a denial of service condition at the client level. Mattermost Advisory ID: MMSA-2026-00633

Scoring

CVSS 3.5 ()
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
EPSS0.17% probability of exploitation · percentile 6.7% · 2026-06-18T12:00:27Z
Last modified2026-06-05

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.