VulnSocial

CVE-2026-55470Disclosure(hapifhir / hl7_fhir_core)

LOWCVSS 7.5 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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.

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0.0/ 10 priority

Sources & remediation

Patch / fix
Exploit / PoC references
Other references
Weakness type (CWE)
CWE-1333

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • hl7_fhir_core

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
hapifhir
Products
hl7_fhir_core

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-07-09: 1Technical Details · 2026-07-09: 107-09
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
Full discourse1 post
  • Cyber Threat Observatory | Alan Turing Institute@TuringCyberObs
    Disclosure

    CVE-2026-55470 HAPI FHIR ReDoS in FHIRPath processing could allow CPU exhaustion and service disruption in healthcare interoperability systems Full analysis: https://github.com/alan-turing-institute/cyber-threat-observatory/blob/main/reports/2026-07-08/TIER_2_CVE-2026-55470.md #CyberSecurity #HealthcareCybersecurity #VulnerabilityManagement

    Post summary

    CVE‑2026‑55470 is a ReDoS vulnerability in HAPI FHIR’s FHIRPath processing that may cause CPU exhaustion and service disruption; a detailed report is available on GitHub.

    0000042
    57 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Apphapifhirhl7_fhir_core---

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