CVE-2026-9602
MEDIUM
NVD
CVSS Score
6.5
Severity
MEDIUM
Published
Jul 17, 2026
Vendor
unknown
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