CVE-2026-124458
OpenEMR before 8.4.0 FHIR Patient Compartment Bypass via Person Endpoint
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
OpenEMR before 8.4.0 contains an authorization bypass vulnerability in the FHIR GET /fhir/Person/:uuid route that allows patient-portal users to read any staff member's demographics by bypassing compartment enforcement. Attackers holding a patient SMART token with patient/Person.read can harvest staff Person UUIDs from Appointment references to retrieve names, home addresses, phone numbers, and personal emails.
| CWE | CWE-284 |
| Vendor | openemr |
| Product | openemr |
| Published | Nov 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
openemr / openemr
0 < 8.4.0
References
Credits
CyberKareem