VULNERABILITY INTELLIGENCE

CVE-2026-9602

CVSS score6.5 MEDIUM

EPSS probability0.42%

CISA KEVNot currently listed

Published2026-07-17

Last modified2026-10-15

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-2026-0067…