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Vulnerability record · CVE-2026-44506 · published 3 September 2026

CVE-2026-44506: Information exposure vulnerability

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.

8.2 CVSS 3.1 High EPSS 0.35% · top 73.7% CWE-200 · Information exposure Deferred
8.2CVSS 3.1 base score
0.35%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
9 Sep 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

References

LinkTags
https://github.com/medplum/medplum/releases/tag/v5.1.7
https://github.com/medplum/medplum/security/advisories/GHSA-ch8p-j6cm-r7w5

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Source: NIST National Vulnerability Database (record CVE-2026-44506), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.