CVE-2026-4643

3.5 LOW

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 ...

Published: 2026-05-18 · Last updated: 2026-06-05

Severity and scoring

CVSS: 3.5 LOW
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
CWE: CWE-754

Affected products

Vendor	Product
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

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-4643
[Vendor advisory]https://mattermost.com/security-updates

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