CVE-2026-126415
OpenEMR before 8.5.0 Missing Authorization via Patientvalidation Module
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
OpenEMR before 8.5.0 contains a missing authorization vulnerability in the Patient Validation module that allows any authenticated user to retrieve patient demographic records. Attackers can send direct requests with wildcard mf_lname or empty mf_ parameters to the patientvalidation endpoint to enumerate the entire patient_data table.
| CWE | CWE-862 |
| Vendor | openemr |
| Product | openemr |
| Published | Nov 13, 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 < 8.5.0
References
Credits
🔍 TemppVariable