CVE-2026-6046 | Mattermost up to 11.6.x Direct Message information disclosure

A vulnerability categorized as problematic has been discovered in Mattermost up to 10.11.15/10.11.16/11.5.4/11.6.1/11.6.x. This affects an unknown part of the component Direct Message Handler. Such manipulation leads to information disclosure.

This vulnerability is listed as CVE-2026-6046. The attack may be performed from remote. There is no available exploit.

It is advisable to upgrade the affected component.VulDB Recent EntriesRead More