CVE-2026-25147
HIGHCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
Lifecycle Timeline
4Description
OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 8.0.0, in `portal/portal_payment.php`, the patient id used for the page is taken from the request (`$pid = $_REQUEST['pid'] ?? $pid` and `$pid = ($_REQUEST['hidden_patient_code'] ?? null) > 0 ? $_REQUEST['hidden_patient_code'] : $pid`) instead of being fixed to the authenticated portal user. The portal session already has a valid `$pid` for the logged-in patient. Overwriting it with user-supplied values and using it without authorization allows a portal user to view and interact with another patient's demographics, invoices, and payment history-horizontal privilege escalation and IDOR. Version 8.0.0 contains a fix for the issue.
Analysis
OpenEMR versions prior to 8.0.0 allow authenticated portal users to access other patients' protected health information through insecure direct object references (IDOR) in the payment portal, enabling horizontal privilege escalation to view and modify another patient's demographics, invoices, and payment history. The vulnerability stems from accepting patient ID values from user-controlled request parameters instead of validating against the authenticated user's session. …
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Remediation
Within 24 hours: Identify all OpenEMR instances and document current versions; notify clinical and compliance leadership of exposure scope. Within 7 days: Deploy OpenEMR version 8.0.0 or later across all affected systems; validate patch installation and confirm portal functionality. …
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