What is the CVSS score of EUVD-2026-13223?

EUVD-2026-13223 has a CVSS 3.1 base score of 5.4 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Openemr are affected by EUVD-2026-13223?

Organizations using OpenEMR should be aware of moderate risk from CVE-2026-33303, a cross-site scripting vulnerability rated CVSS 5.4.. A patch is available.

How to fix or mitigate EUVD-2026-13223?

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

Openemr EUVD-2026-13223

| CVE-2026-33303 MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2026-03-19 GitHub_M

XSS Openemr

5.4

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

5.4 MEDIUM

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

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

Patch available

Apr 16, 2026 - 05:29 EUVD

8.0.0.2

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

DescriptionGitHub Advisory

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.

AnalysisAI

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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Vulnerability AssessmentAI

Risk Assessment	Attackers can steal session cookies, redirect users to malicious sites, deface content, or perform actions on behalf of authenticated users. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An attacker injects a JavaScript payload into a vulnerable input field. When another user views the page, the script executes in their browser, stealing their session token.
Remediation	Encode all user-supplied output contextually (HTML, JS, URL). … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. …

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EUVD-2026-13223 vulnerability details – vuln.today

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