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CVE-2026-9602

MEDIUM CVSS: 6.5 Published: 2026-07-17 Modified: 2026-07-30

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

Affected Platforms

Mattermost Mattermost Desktop

Weakness Type

CWE-400

References