CVE-2026-124482
OpenEMR before 8.4.0 Cross-Patient PHI Exfiltration via SMART Patient Launch
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
OpenEMR before 8.4.0 contains an authorization bypass allowing low-privileged SMART standalone-launch users to bind arbitrary patient UUIDs into the OAuth token context. Attackers with only the patients|demo ACL can select a victim during authorization and read that patient's clinical notes and documents through patient-scoped DocumentReference and Binary FHIR endpoints.
| CWE | CWE-639 |
| 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