CVE-2026-9602

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CVSS 3.1

6.5 medium

EPSS

<1%p35

Published

Jul 17, 2026 (Jul 17, 2026)

Modified

Jul 30, 2026

Description

Mattermost Desktop App versions <=6.2 6.0.2 5.6.13.0 fail to validate payloads sent from the Mattermost Web App to the Desktop App which allows a malicious server owner to crash the Mattermost Desktop App via changing the payload of a method to a malformed one. Mattermost Advisory ID: MMSA-2026-00678

Vendors: mattermost
Products: mattermost desktop
Weakness: CWE-400
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (0.4%)

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