CVE-2026-6689 | Mattermost up to 11.6.x Setting authorization

June 12, 2026 Yanac

A vulnerability was found in Mattermost up to 10.11.15/10.11.16/11.5.4/11.6.1/11.6.x and classified as problematic. This vulnerability affects unknown code of the component Setting Handler. The manipulation results in missing authorization.

This vulnerability is identified as CVE-2026-6689. The attack can be executed remotely. There is not any exploit available.

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