CVE-2026-78224
HighPublished
NextGen Healthcare Mirth Connect Improper Restriction of XML External Entity Reference
- Published
- Sep 11, 2026
- Updated
- Sep 11, 2026
- Assigning CNA
- icscert
- Evidence observed
- Sep 11, 2026
Primary CVSS
8.8/ 10High
nvd · CVSS 4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X0.4%
Low · next 30 days
- Percentile
- 37.4%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
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.
Sources
1Working PoCs for three NextGen Connect 4.5.2 vulnerabilities.
Responsible use
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