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CVE-2026-9602

6.5 medium SSVC exploitation: none Analyzed
NVD · CVE.org

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

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 6.5 · mattermostNVD modified 2026-10-15 13:32

Affected (CPE criteria) 1

  • cpe:2.3:a:mattermost:mattermost_desktop:*:*:*:*:*:*:*:*

References 1