What’s Vulnerable › Vulnerabilities

CVE-2026-78224: NextGen Healthcare Mirth Connect Improper Restriction of XML External Entity Reference

• Severity: high (CVSS 8.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-11 · updated 2026-09-18
• Weakness: CWE-611

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.

Affected products

• NextGen Healthcare Mirth Connect: through 4.7.1

References

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

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