CVE-2026-44506 Medplum - Exposure of OAuth client secret via dynamic registration endpoint in self-hosted configurations

Medplum is a developer platform that enables development of healthcare apps. In Medplum versions 4.1.10 through 5.1.6, the /oauth2/register endpoint could return the clientsecret of preconfigured OAuth clients defined via the defaultOAuthClients server configuration when a matching redirecturi wa...