Unrated severityNVD Advisory· Published Jul 17, 2026· Updated Jul 17, 2026
Mattermost Desktop App crashes when malformed arguments are provided to some exposed IPC methods
CVE-2026-9602
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 products
1- Range: <=6.2, 6.0.2, 5.6.13.0
Patches
Vulnerability mechanics
References
1- mattermost.com/security-updatesmitrevendor-advisory
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