CVE-2025-11777 | Mattermost up to 10.5.11/10.11.3 Add Channel Member API Endpoint authorization

November 13, 2025 Yanac

A vulnerability classified as problematic has been found in Mattermost up to 10.5.11/10.11.3. This vulnerability affects unknown code of the component Add Channel Member API Endpoint. This manipulation causes incorrect authorization.

This vulnerability is handled as CVE-2025-11777. The attack can be initiated remotely. There is not any exploit available.

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