Is this vulnerability remotely exploitable?

Yes, if an attacker can remotely provide a CCDA document to the system (for example, via integrations, referrals, or other submission channels) and it is later previewed by a clinician, the attack can be triggered through the web interface.

Does an attacker need authenticated access to exploit this issue?

Not necessarily. The key requirement is the ability to get a malicious CCDA document stored or processed by OpenEMR and then viewed by an authenticated user. In some deployments this may require authenticated access, while in others CCDA inputs may be accepted from external, less trusted systems.

What is the safest general fix pattern for this vulnerability class?

Apply strict, context-aware output encoding and sanitization at the point where untrusted data is inserted into HTML, ensure that all markup transformation paths (including XSLT) treat external content as untrusted, and enforce a default-deny policy on tags, attributes, and URL schemes.

Severity:

HIGH RISK

(7.6)

Stored Cross-Site Scripting (CWE-79) in OpenEMR CCDA Document Preview

CVE-2026-33932

Published:

Mar 25, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Stored Cross-Site Scripting (XSS)

CWE:

CWE-79

Impact:

Arbitrary JavaScript Execution in Clinician Browser Session

Severity:

HIGH RISK

(7.6)

CVSS Version:

3.1

Vulnerability Type

Category:

Stored Cross-Site Scripting (XSS)

CWE:

CWE-79

Impact:

Arbitrary JavaScript Execution in Clinician Browser Session

Severity:

HIGH RISK

(7.6)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

Detect vulnerable code directly in pull requests, so CVEs are fixed before merge.

Get Started

Ship clean & secure code faster

START 14 DAYS FREE TRIAL

BOOK A DEMO

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Stored Cross-Site Scripting (CWE-79) in OpenEMR CCDA Document Preview

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Product

Pricing

Company

Legal

Developers

Compare

Product

Pricing

Company

Legal

Developers

Compare

Product

Pricing

Company

Legal

Developers

Compare