CVE WatchJul 23, 2026

CVE-2026-46518

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 8.0.0.1, a stored

CVSS

7.7

High

EPSS

0.2%

p11

KEV

—

Exploit Today

0-100

Published: Jun 10, 2026 · Last modified: Jul 23, 2026 · CWE-79 · CWE-862

EPSS · 30d

0.2%EPSS · 30 days0.2%

2026-07-172026-08-13

Technical description

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.

Official references

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