CVE-2026-78224 PUBLISHED

NextGen Healthcare Mirth Connect Improper Restriction of XML External Entity Reference

Assigner: icscert
Reserved: 03.09.2026 Published: 11.09.2026 Updated: 11.09.2026

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.

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
CVSS Score: 8.2

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	None
User Interaction	None	Availability Impact	Low

CVSS 3.1

CVSS 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
CVSS Score: 8.8

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	Low	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	NextGen Healthcare
Product	Mirth Connect
Versions	Default: unaffected affected from 0 to 4.7.1 (incl.) Version 4.7.2 is unaffected

Solutions

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

CVE-2026-78224 PUBLISHED

NextGen Healthcare Mirth Connect Improper Restriction of XML External Entity Reference

Metrics

Product Status

Solutions

Credits

References

Problem Types