PT-2026-67439 · Openemr · Openemr

Jiva · CVE-2026-67610 · Published 2026-08-03 · Updated 2026-08-03

NVD

CVSS v3.1

8.1

High

Base vector

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

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.

Exploit

Fix

Missing Authentication

Weakness Enumeration

CWE-306

Related Identifiers

CVE-2026-67610

Affected Products

Openemr

References · 3

• 🔥 https://jivasecurity.com/writeups/openemr-unauth-oauth2-client-registration · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-67610 · Security Note
• https://vulncheck.com/advisories/openemr-oauth2-dynamic-client-registration-unauthorized-fhir-access · Note