CVE-2026-4643

—

CVSS 3.1

3.5 low

EPSS

<1%p7

Published

May 18, 2026 (May 18, 2026)

Modified

Jun 17, 2026

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

Vendors: mattermost
Products: mattermost desktop
Weakness: CWE-754
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L

NVD CVE.org GitHub PoCs EPSS (0.2%)

In the news0 stories

No ingested article mentions this CVE yet.