CVE-2026-78224

NextGen Healthcare Mirth Connect Improper Restriction of XML External Entity Reference

State: Published
Severity: 8.8 High
Published: Sep 11, 2026
Updated: Sep 11, 2026
Reserved: Sep 3, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	8.8 High	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	icscert
3.1	8.2 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L	icscert

Weaknesses

CWE-611

Affected Products

Product	Versions
Mirth ConnectNextGen Healthcare	4.7.1 and earlierAffected 4.7.2Not affected

References

https://www.cisa.gov/news-events/ics-medical-advisories/icsma-26-253-01
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsma-26-253-01.json

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