CVE-2026-82578
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
8.7/ 10High
nvd · CVSS 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/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
- 34.8%
- 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
When XML batch processing is turned on and the XPath option is selected, the raw batch input goes through a default XPath/JAXP setup with no entity restrictions, 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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