CVE-2026-55470
Last modified
CVE-2026-55470 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.35% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Hapifhir | Hl7 Fhir Core | < 6.9.10 |
References
- https://github.com/hapifhir/org.hl7.fhir.core/security/advisories/GHSA-fxj4-p9xp-37v5Exploit, Third Party Advisory
- https://github.com/hapifhir/org.hl7.fhir.core/security/advisories/GHSA-fxj4-p9xp-37v5Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-55470?
How severe is CVE-2026-55470?
How do I fix CVE-2026-55470?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-55461Snipe-IT is an IT asset/license management system. Prior to …6.1
- CVE-2026-55462Snipe-IT is an IT asset/license management system. Prior to …4.3
- CVE-2026-55464Snipe-IT is an IT asset/license management system. Prior to …5.4
- CVE-2026-55466Snipe-IT is an IT asset/license management system. Prior to …8.7
- CVE-2026-55469Snipe-IT is an IT asset/license management system. Prior to …6.5
- CVE-2026-5547A vulnerability has been found in Tenda AC10 16.03.10.10_mul…8.8
- CVE-2026-55471HAPI FHIR is a complete implementation of the HL7 FHIR stand…9.1
- CVE-2026-55472Snipe-IT is an IT asset/license management system. Prior to …4.3
- CVE-2026-55474Snipe-IT is an IT asset/license management system. Prior to …6.5
- CVE-2026-55475Snipe-IT is an IT asset/license management system. Prior to …5.7
- CVE-2026-55476Snipe-IT is an IT asset/license management system. Prior to …4.3
- CVE-2026-554773X-UI is a web control panel for managing Xray-core servers.…7.2
Are you affected by CVE-2026-55470?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST