CVE-2026-78224

NextGen Healthcare Mirth Connect Improper Restriction of XML External Entity Reference

Published Sep 11, 2026 CVSS 4.0 · 8.8 High EPSS < 1% KEV · Not listed
Description
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

Vendor Solution

NextGen recommends users update Mirth Connect v4.7.2 or later. Users can download the latest version from the NextGen Healthcare customer portal.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Nextgen Healthcare
Nextgen Healthcare mirth Connect
Vendors & Products Nextgen Healthcare
Nextgen Healthcare mirth Connect
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title NextGen Healthcare Mirth Connect Improper Restriction of XML External Entity Reference
Weaknesses CWE-611
References
Metrics cvssV3_1

{'score': 8.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L'}

cvssV4_0

{'score': 8.8, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
icscert
Published
Updated
Sep 11, 2026, 2:57 PM
Reserved
Sep 3, 2026, 9:01 PM
Status
Awaiting Analysis
Published
Sep 11, 2026, 3:17 PM
Modified
Sep 18, 2026, 7:40 PM