Security Advisory

CVE-2026-33425

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-03-20 23:12:30

Last updated 2026-03-23 16:48:49

Assigner GitHub_M

State PUBLISHED

Description

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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