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CVE-2026-33303

MEDIUM CVSS 3.1: 5.4 EPSS 0.02%
Updated Mar 20, 2026
Open-Emr
Parameter Value
CVSS 5.4 (MEDIUM)
Affected Versions before 8.0.0.2
Fixed In 8.0.0.2
Type CWE-79 (Cross-Site Scripting (XSS))
Vendor Open-Emr
Public PoC No

OpenEMR is a free and open source electronic health records and medical practice management application. Versions prior to 8.0.0.2 are vulnerable to stored cross-site scripting (XSS) via unescaped `portal_login_username` in the portal credential print view. A patient portal user can set their login username to an XSS payload, which then executes in a clinic staff member's browser when they open the "Create Portal Login" page for that patient.

This crosses from the patient session context into the staff/admin session context. Version 8.0.0.2 fixes the issue.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
Required
User action required

Impact Assessment

Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption

CVSS Vector v3.1

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Open-Emr Openemr
cpe:2.3:a:open-emr:openemr:*:*:*:*:*:*:*:*
8.0.0.2