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OpenAdvisories
High · 8.2 CVE-2026-44506 EUVD-2026-70699

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

Published Sep 3, 2026 · Updated Sep 4, 2026 · Assigned by GitHub_M

Description

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 client_secret of preconfigured OAuth clients defined via the defaultOAuthClients server configuration when a matching redirect_uri was provided. This issue has been patched in version 5.1.7.

Affected products

VendorProductAffectedFixed
medplum medplum >= 4.1.10, < 5.1.7 —

References