PT-2026-60738 · Mattermost · Mattermost

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CVE-2026-9602

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Published

2026-07-17

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Updated

2026-07-17

CVSS v3.1

6.5

Medium

VectorAV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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

Fix

Resource Exhaustion

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Weakness Enumeration

Related Identifiers

CVE-2026-9602

Affected Products

Mattermost