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CVE PROGRAM SOURCE RECORD5.7 Medium

CVE-2026-9602

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

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Status
Published
Published
Updated
Assigning organization
Mattermost

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

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Mattermost Mattermost

Default version status: unaffected

  • 0 to ≤ 6.0.2affected
  • 0 to ≤ 5.6.13affected
  • 6.3.0unaffected
  • 6.2.1.0unaffected
  • 5.13.7.0unaffected

References