BIT-DISCOURSE-2026-33300 Discourse: Hidden group names and access metadata are exposed to moderators through the `category-chatables` endpoint

Discourse is an open-source discussion platform. From versions 2026.1.0 to before 2026.1.3, and 2026.2.0 to before 2026.2.2, an authorization bypass in the Category Chatables Controller show action allowed moderators to get information on hidden groups names and user count. This issue has been...