Is this vulnerability remotely exploitable over the internet?

Yes, if the OpenEMR instance is exposed over the internet and an attacker can obtain valid credentials with access to the Carecoordination module. The attack is performed via HTTP(S) by uploading a malicious CCDA file.

Does an attacker need elevated or administrative access to exploit this?

Not necessarily. The attacker needs an authenticated account with permission to use the Carecoordination CCDA upload feature. They do not need operating system–level access, but their application role must allow CCDA imports.

What is the safest general fix pattern for this issue?

The most robust fix is to ensure all XML parsers handling untrusted data are configured in a "secure mode" that disables XInclude, external entities, and external resource loading entirely. Complement this with schema validation and rejecting any unexpected XML constructs.

Severity:

HIGH RISK

(7.7)

XML External Entity (XXE) via XInclude (CWE-611) in OpenEMR Carecoordination Module

CVE-2026-33913

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:

XML External Entity (XXE) / XInclude Injection

CWE:

CWE-611

Impact:

Arbitrary File Read / Information Disclosure

Severity:

HIGH RISK

(7.7)

CVSS Version:

3.1

Vulnerability Type

Category:

XML External Entity (XXE) / XInclude Injection

CWE:

CWE-611

Impact:

Arbitrary File Read / Information Disclosure

Severity:

HIGH RISK

(7.7)

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

XML External Entity (XXE) via XInclude (CWE-611) in OpenEMR Carecoordination Module

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