CVE-2026-21865 - Discourse topic conversion permission vulnerability for moderators

CVE ID : CVE-2026-21865 Published : Jan. 28, 2026, 8:16 p.m. | 44 minutes ago Description : Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, moderators can convert some personal messages to public topics when they shouldn't have access. This issue is patched in versions 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0. As a workaround, site admin can temporarily revoke the moderation role from untrusted moderators or remove the moderator group from the