Vulnerabilities CVE-2026-9602

CVE-2026-9602

Medium

Open

TLP:CLEAR

Mattermost Desktop App crashes when malformed arguments are provided to some exposed IPC methods

NVD CVE.org

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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

Details

CVSS Score: 5.7
EPSS Score ⓘ: 0.24%

15.4th percentile
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Confidence: 90%
Published: Jul 17, 2026
Last Modified: Jul 17, 2026

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