CVE-2026-33428 — Discourse Allows Unauthorized Access to Deleted Posts Index via Group Membership
Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, a non-staff user with elevated group membership could access delete…
Published: 2026-03-20 · CVSS: 4.9 · CVSS 4.0
Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, a non-staff user with elevated group membership could access deleted posts belonging to any user due to an overly broad authorization check on the deleted posts index endpoint. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No known workarounds are available.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7