---
id: CVE-2026-78224
title: >-
  The XSLT Transformer Step builds a bare TransformerFactory without the proper
  security options set, so XXE injection can allow data exfiltration and
  denial-of-service attacks.
summary: >-
  The XSLT Transformer Step builds a bare TransformerFactory without the proper
  security options set, so XXE injection can allow data exfiltration and
  denial-of-service attacks.
severity: high
cvss: 8.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L'
cwe:
  - CWE-611
vendor: NextGen Healthcare
product: Mirth Connect
affected:
  - mirth_connect <= 4.7.1
published: '2026-09-11'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T19:40:31.053'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-78224'
references:
  - url: >-
      https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsma-26-253-01.json
    label: ics-cert@hq.dhs.gov
  - url: 'https://www.cisa.gov/news-events/ics-medical-advisories/icsma-26-253-01'
    label: ics-cert@hq.dhs.gov
tags:
  - nvd
  - cve.org
epss: 0.00437
epssPercentile: 0.35515
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-11T14:51:00.487459Z'
ingestedAt: '2026-09-11T16:45:47.861Z'
---

## Overview

The XSLT Transformer Step builds a bare TransformerFactory without the proper security options set, so XXE injection can allow data exfiltration and denial-of-service attacks.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.