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Openemr CVE-2026-33299

| EUVDEUVD-2026-13160 MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2026-03-19 GitHub_M
5.4
CVSS 3.1 · GitHub Advisory
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

Attackers can steal session cookies, redirect users to malicious sites, deface content, or perform actions on behalf of authenticated users.

Exploit ScenarioDerived

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.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 19, 2026

Stored XSS in OpenEMR prior to 8.0.0.2 allows authenticated users with the "Notes - my encounters" role to inject malicious JavaScript into Eye Exam form fields, which executes when other users with the same role view the form responses. An attacker can exploit this to steal session tokens, perform unauthorized actions, or compromise patient data through form manipulation. No patch is currently available for affected versions.

Earlier versions of this analysis (1)
v1 Mar 19, 2026 - 21:00 CVSS 5.4

RemediationAI

Encode all user-supplied output contextually (HTML, JS, URL). Implement Content Security Policy (CSP) headers. Use HTTPOnly and Secure cookie flags.

Affected VersionsENISA

OpenEMR < 8.0.0.2

Affected Packages

euvd openemr fix: 8.0.0.2

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Cross-site scripting (XSS) allows injection of client-side scripts into web pages viewed by other users due to insufficient output encoding.

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  • Exploit and PoC references, threat intelligence from 22 sources

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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

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

2
Patch available
Apr 16, 2026 - 05:29 EUVD
8.0.0.2
CVE Published
Mar 19, 2026 - 20:07 nvd
MEDIUM 5.4

DescriptionGitHub Advisory

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.0.0.2, users with the Notes - my encounters role can fill Eye Exam forms in patient encounters. The answers to the form are displayed on the encounter page and in the visit history for the users with the same role. There exists a stored cross-site scripting (XSS) vulnerability in the function to display the form answers, allowing any authenticated attacker with the specific role to insert arbitrary JavaScript into the system by entering malicious payloads to the form answers. The JavaScript code is later executed by any user with the form role when viewing the form answers in the patient encounter pages or visit history. Version 8.0.0.2 fixes the issue.

Executive ViewAI

Why It Matters

A stored cross-site scripting vulnerability in OpenEMR versions prior to 8.0.0.2 allows authenticated users with specific roles to inject malicious code into Eye Exam forms, which executes when other authorized users view patient encounters. This could compromise patient data confidentiality, enable credential theft, or facilitate unauthorized system access across your clinical staff.

Business Impact: High
Compensating Controls

Disable Eye Exam form feature until patching is possible; implement Web Application Firewall (WAF) rules to block script injection patterns in form inputs; restrict 'Notes - my encounters' role assignment to minimum necessary personnel; enable and monitor detailed audit logs for Eye Exam form activity; implement Content Security Policy (CSP) headers to prevent inline JavaScript execution; consider network segmentation to limit access to OpenEMR from trusted administrative networks only.

Threat Intelligence Overview

EPSS Score
0.0%
Top 86% exploitable
Data Quality
6 sources
Confidence: High

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.0%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact
High

Priority Score

27
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +27
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

CVE-2013-10044 HIGH POC
8.7 Aug 01

An authenticated SQL injection vulnerability exists in OpenEMR ≤ 4.1.1 Patch 14 that allows a low-privileged attacker to

CVE-2026-24898 CRITICAL POC
10.0 Mar 03

Unauthenticated token disclosure in OpenEMR before 8.0.0. CVSS 10.0. PoC and patch available.

CVE-2026-24848 CRITICAL POC
9.9 Mar 03

Path traversal in OpenEMR 7.0.4 disposeDocument() allows file access. PoC available.

CVE-2026-24849 CRITICAL POC
9.9 Feb 25

Path traversal in OpenEMR electronic health records before fix allows authenticated users to read arbitrary files on the

CVE-2026-24908 CRITICAL POC
9.9 Feb 25

SQL injection in OpenEMR electronic health records before fix. Authenticated users can execute arbitrary SQL through the

CVE-2024-22611 CRITICAL POC
9.8 Apr 03

OpenEMR 7.0.2 is vulnerable to SQL Injection via \openemr\library\classes\Pharmacy.class.php, \controllers\C_Pharmacy.cl

CVE-2024-37734 CRITICAL POC
9.8 Jun 26

An issue in OpenEMR 7.0.2 allows a remote attacker to escalate privileges viaa crafted POST request using the noteid par

CVE-2026-25146 CRITICAL POC
9.6 Mar 03

Information disclosure in OpenEMR 5.0.2 to before 8.0.0 exposes sensitive data. PoC and patch available.

CVE-2026-39932 CRITICAL POC
9.4 Aug 03

Remote code execution in OpenEMR through 8.2.0 lets an authenticated administrator poison the document category tree so

CVE-2012-0992 HIGH POC
8.5 Feb 07

interface/fax/fax_dispatch.php in OpenEMR 4.1.0 allows remote authenticated users to execute arbitrary commands via shel

CVE-2015-4453 MEDIUM
5.0 Jul 05

interface/globals.php in OpenEMR 2.x, 3.x, and 4.x before 4.2.0 patch 2 allows remote attackers to bypass authentication

CVE-2018-15152 CRITICAL POC
9.1 Aug 15

Authentication bypass vulnerability in portal/account/register.php in versions of OpenEMR before 5.0.1.4 allows a remote

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