CVE•Published 2026-07-08•Modified 2026-07-16•1 article on news•5 live references•NVD data

CVE-2026-55471Hapifhir · Hl7_fhir_core

Vulnerability data via NVD (ingested)

CVSS v3.1

9.1

CRITICAL

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

EPSS percentile

Exploit Prediction Scoring System · top 77% of all CVEs

Weaknesses (CWE)

CWE-611Improper Restriction of XML External Entity Reference

Description

HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior to 6.9.10, org.hl7.fhir.utilities.XsltUtilities saxonTransform(...) overloads instantiated a bare net.sf.saxon.TransformerFactoryImpl() without ACCESS_EXTERNAL_DTD or ACCESS_EXTERNAL_STYLESHEET restrictions, allowing an attacker who controls or can tamper with transformed XML to trigger XML External Entity injection for local file disclosure and blind XXE or SSRF to arbitrary URLs reachable from the host. This issue is fixed in version 6.9.10.

Timeline

Published 2026-07-08

Modified 2026-07-16

External references

NVD MITRE Exploit-DB trickest/cve VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common). Live host counts are a Premium feature.

Shodan · vuln tag

vuln:CVE-2026-55471

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Hapifhir Hl7 Fhir Core"

All exposed Hapifhir Hl7 Fhir Core instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Hl7 Fhir Core"

HTTP body or banner mentions "Hl7 Fhir Core" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-55471