CVE-2026-32620 Discourse: Missing post-level authorization allows whisper metadata disclosure

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, non-staff users could access read receipt information for staff-only posts they weren't supposed to see. No post content w...

CVE-2026-32273

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, updating a category description via API is not sanitizing the description string, which can lead to XSS attacks. This issu...

BIT-DISCOURSE-2026-33425 Discourse has inferable private group membership or existence via exclude_groups parameter

Discourse is an open-source discussion platform. Prior to versions 2026.3.0, 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 excludegroups parameter. Versions 2026.3.0,...

BIT-DISCOURSE-2026-33291 Discourse user can create Zendesk tickets even when it does not have access to topic

Discourse is an open-source discussion platform. Prior to versions 2026.3.0, 2026.2.1, and 2026.1.2, moderators can create Zendesk tickets for topics they do not have access to view. This affects all forums that use the Zendesk plugin. Versions 2026.3.0, 2026.2.1, and 2026.1.2 contain a patch. No...