Security Advisory

CVE-2026-9602

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-07-17 10:03:26

Last updated 2026-07-17 12:54:25

Assigner Mattermost

CVSS score 5.7

State PUBLISHED

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

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