CVE-2026-44506
Medplum - Exposure of OAuth client secret via dynamic registration endpoint in self-hosted configurations
CVSS Score
8.2
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-200 |
| Vendor | medplum |
| Product | medplum |
| Published | Sep 3, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
None
Affected Versions
medplum / medplum
>= 4.1.10, < 5.1.7