CVE-2026-67610

OpenEMR through 8.2.0 contains an improper authentication vulnerability in the OAuth2 dynamic client registration endpoint that allows unauthenticated attackers to register a malicious client with system-level FHIR scopes by supplying a self-generated RSA keypair via the jwks field. Once an administrator approves the registered client, attackers can use the client_credentials grant with a self-signed JWT assertion to obtain access tokens granting read access to all FHIR resources across all patients in the system.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://jivasecurity.com/writeups/openemr-unauth-oauth2-client-registration
https://www.vulncheck.com/advisories/openemr-oauth2-dynamic-client-registration-unauthorized-fhir-access

Configurations

No configuration.

History

03 Aug 2026, 17:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-08-03 17:16

Updated : 2026-08-03 17:16

NVD link : CVE-2026-67610

Mitre link : CVE-2026-67610

CVE.ORG link : CVE-2026-67610

JSON object : View

Products Affected

No product.

CWE

CWE-306

Missing Authentication for Critical Function

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