CVE-2026-67610
OpenEMR 8.2.0 OAuth2 Dynamic Client Registration Unauthorized FHIR Access
CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-306 |
| Vendor | openemr |
| Product | openemr |
| Published | Aug 3, 2026 |
| Last Updated | Aug 3, 2026 |
Stay Ahead of the Next One
Get instant alerts for openemr openemr
Be the first to know when new high vulnerabilities affecting openemr openemr are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
openemr / openemr
0 ≤ 8.2.0
References
Credits
Jiva (JivaSecurity)