CVE•Published 2026-07-08•Modified 2026-07-16•0 articles on news•4 live references•NVD data

CVE-2026-55470Hapifhir · Hl7_fhir_core

Vulnerability data via NVD (ingested)

CVSS v3.1

7.5

HIGH

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

EPSS percentile

Exploit Prediction Scoring System · top 72% of all CVEs

Weaknesses (CWE)

CWE-1333Inefficient Regular Expression Complexity

Description

HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior to 6.9.10, the fix for CVE-2026-45367 incompletely patched the DSTU2 module, leaving FHIRPathEngine.matches() in org.hl7.fhir.dstu2/utils/FHIRPathEngine.java to call raw String.matches(sw) without RegexTimeout protection while replaceMatches() was updated, allowing an unauthenticated attacker to trigger catastrophic regex backtracking and exhaust server CPU. This issue is fixed in version 6.9.10.

Timeline

Published 2026-07-08

Modified 2026-07-16

External references

NVD MITRE Exploit-DB 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).

Shodan · vuln tag0 hosts

vuln:CVE-2026-55470

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-2026-55470