CVE-2026-33303

| EUVD-2026-13223 MEDIUM
2026-03-19 GitHub_M
5.4
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

3
EUVD ID Assigned
Mar 19, 2026 - 21:00 euvd
EUVD-2026-13223
Analysis Generated
Mar 19, 2026 - 21:00 vuln.today
CVE Published
Mar 19, 2026 - 20:25 nvd
MEDIUM 5.4

Tags

Description

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.

Analysis

Stored XSS in OpenEMR versions before 8.0.0.2 allows authenticated patient portal users to inject malicious scripts into their login username, which execute in the browsers of clinic staff when viewing the portal credential creation page. This vulnerability enables attackers to compromise staff and admin sessions through the patient context, potentially leading to unauthorized access or data manipulation within the healthcare system. …

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Remediation

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

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Priority Score

27
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +27
POC: 0

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CVE-2026-33303 vulnerability details – vuln.today

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