CVE-2026-46518
HighCVSS 7.7Exploitation Probability (EPSS)
Low risk12th percentile - higher than 12% of all known CVEs
Summary
OpenEMR prior to version 8.0.0.1 contains a stored XSS vulnerability in the prescription multi-print feature. A patient portal user can execute arbitrary JavaScript in a clinician's browser session, violating the trust boundary between patient and clinician.
Risk Assessment
An attacker can access CSRF tokens and session data of the clinician, allowing actions to be performed on behalf of the clinician. This poses a serious threat to patient data security.
Recommendation
It is recommended to upgrade OpenEMR to version 8.0.0.1 or later to mitigate this vulnerability. Additionally, implementing further security measures to minimize the risk of XSS attacks is advisable.
Original NVD description (English source)
OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 8.0.0.1, a stored cross-site scripting vulnerability in the prescription CSS/HTML multi-print feature allows a patient portal user to execute arbitrary JavaScript in a clinician's browser session. Patient demographic fields (name, address) are rendered without output encoding in multiprintcss_header(), and portal patients can write attacker-controlled HTML directly into patient_data by calling the PUT api/patient/:num endpoint, which bypasses the intended audit review workflow. Because the XSS fires in the clinician's authenticated session on the main OpenEMR interface, the attacker can access CSRF tokens, session data, and perform actions as the clinician — crossing the patient-to-clinician trust boundary. This issue has been patched in version 8.0.0.1.