| Package | Affected versions | Patched versions |
|---|---|---|
| discourse | = 2026.3.0≥ 2026.1.0, < 2026.1.2≥ 2026.2.0, < 2026.2.1 | 2026.1.22026.2.1 |
Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, unauthenticated users can determine whether a specific user is a member of a private group by observing changes in directory results when using the `exclude_groups` parameter. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. As a workaround, disable public access to the user directory via Admin → Settings → hide user profiles from public.
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