CVE-2026-21865 | Discourse prior 3.5.4/2025.11.2/2025.12.1/2026.1.0 Personal Message authorization (GHSA-4777-wrv5-3g39 / EUVD-2026-4874)
A vulnerability described as problematic has been identified in Discourse. Affected is an unknown function of the component Personal Message Handler. The manipulation results in missing authorization.
This vulnerability is known as CVE-2026-21865. It is possible to launch the attack remotely. No exploit is available.
Upgrading the affected component is recommended.