CVE-2026-44506Medplum - Exposure of OAuth client secret via dynamic registration endpoint in self-hosted configurations
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 8.2 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
- Weakness (CWE)
- CWE-200
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- Sep 4, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
medplum medplum medplum:medplum (from the name) | from 4.1.10, < 5.1.7 | CNA record |
References
- https://github.com/medplum/medplum/security/advisories/GHSA-ch8p-j6cm-r7w5x-refsource-confirm
- https://github.com/medplum/medplum/releases/tag/v5.1.7x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.