The package-decompression feature in HL7 (Health Level 7) FHIR Core Libraries before…
Priority HIGH 66CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-22 and the CVSS impact.
Summary
The package-decompression feature in HL7 (Health Level 7) FHIR Core Libraries before 5.6.106 allows attackers to copy arbitrary files to certain directories via directory traversal, if an allowed directory name is a substring of the directory name chosen by the attacker. NOTE: this issue exists because of an incomplete fix for CVE-2023-24057.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.013 70th percentileScored 2026-11-07
Fix Fixed ca.uhn.hapi.fhir:org.hl7.fhir.core (Maven): 5.6.106ca.uhn.hapi.fhir:org.hl7.fhir.convertors (Maven): 5.6.106+4 more products
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | ca.uhn.hapi.fhir:org.hl7.fhir.core (Maven) | before 5.6.106 | 5.6.106 | Patch available | GHSA-9654-pr4f-gh6m |
| — | ca.uhn.hapi.fhir:org.hl7.fhir.convertors (Maven) | before 5.6.106 | 5.6.106 | Patch available | GHSA-9654-pr4f-gh6m |
| — | ca.uhn.hapi.fhir:org.hl7.fhir.r4b (Maven) | before 5.6.106 | 5.6.106 | Patch available | GHSA-9654-pr4f-gh6m |
| — | ca.uhn.hapi.fhir:org.hl7.fhir.r5 (Maven) | before 5.6.106 | 5.6.106 | Patch available | GHSA-9654-pr4f-gh6m |
| — | ca.uhn.hapi.fhir:org.hl7.fhir.utilities (Maven) | before 5.6.106 | 5.6.106 | Patch available | GHSA-9654-pr4f-gh6m |
| — | ca.uhn.hapi.fhir:org.hl7.fhir.validation (Maven) | before 5.6.106 | 5.6.106 | Patch available | GHSA-9654-pr4f-gh6m |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- ca.uhn.hapi.fhir:org.hl7.fhir.core (Maven) Vendor— Affected before 5.6.106 Fixed in 5.6.106 Patch available GHSA-9654-pr4f-gh6m
- ca.uhn.hapi.fhir:org.hl7.fhir.convertors (Maven) Vendor— Affected before 5.6.106 Fixed in 5.6.106 Patch available GHSA-9654-pr4f-gh6m
- ca.uhn.hapi.fhir:org.hl7.fhir.r4b (Maven) Vendor— Affected before 5.6.106 Fixed in 5.6.106 Patch available GHSA-9654-pr4f-gh6m
- ca.uhn.hapi.fhir:org.hl7.fhir.r5 (Maven) Vendor— Affected before 5.6.106 Fixed in 5.6.106 Patch available GHSA-9654-pr4f-gh6m
- ca.uhn.hapi.fhir:org.hl7.fhir.utilities (Maven) Vendor— Affected before 5.6.106 Fixed in 5.6.106 Patch available GHSA-9654-pr4f-gh6m
- ca.uhn.hapi.fhir:org.hl7.fhir.validation (Maven) Vendor— Affected before 5.6.106 Fixed in 5.6.106 Patch available GHSA-9654-pr4f-gh6m
Remediation
- Fix · GHSA-9654-pr4f-gh6m ca.uhn.hapi.fhir:org.hl7.fhir.core (Maven) Fixed in 5.6.106 Advisory →
- Fix · GHSA-9654-pr4f-gh6m ca.uhn.hapi.fhir:org.hl7.fhir.convertors (Maven) Fixed in 5.6.106 Advisory →
- Fix · GHSA-9654-pr4f-gh6m ca.uhn.hapi.fhir:org.hl7.fhir.r4b (Maven) Fixed in 5.6.106 Advisory →
- Fix · GHSA-9654-pr4f-gh6m ca.uhn.hapi.fhir:org.hl7.fhir.r5 (Maven) Fixed in 5.6.106 Advisory →
- Fix · GHSA-9654-pr4f-gh6m ca.uhn.hapi.fhir:org.hl7.fhir.utilities (Maven) Fixed in 5.6.106 Advisory →
- Fix · GHSA-9654-pr4f-gh6m ca.uhn.hapi.fhir:org.hl7.fhir.validation (Maven) Fixed in 5.6.106 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2023-28465
- 2026-10-03 Alias added: GHSA-9654-pr4f-gh6m
References
Advisory 2
Other 7
- https://www.smilecdr.com/our-blog/statement-on-cve-2023-24057-smile-digital-health
- https://www.smilecdr.com/our-blog
- https://github.com/hapifhir/org.hl7.fhir.core/security/advisories/GHSA-9654-pr4f-gh6m
- https://github.com/hapifhir/org.hl7.fhir.core/pull/1162
- https://github.com/hapifhir/org.hl7.fhir.core
- https://github.com/hapifhir/org.hl7.fhir.core/blob/b0daf666725fa14476d147522155af1e81922aac/org.hl7.fhir.r4b/src/main/java/org/hl7/fhir/r4b/terminologies/TerminologyCacheManager.java#L99-L105
- https://github.com/hapifhir/org.hl7.fhir.core/releases/tag/5.6.106
More hapifhir Hl7 Fhir Core vulnerabilities
- TI-2026-26647 HAPI FHIR: Unauthenticated SSRF via /loadIG Chains with startsWith() Credential Leak for Authentication Token Theft CVSS 3.1CRITICAL 9.3
- TI-2026-40028 HAPI FHIR: XXE in XsltUtilities.saxonTransform via unhardened Saxon TransformerFactory CVSS 4.0HIGH 8.7
- TI-2026-26645 HAPI FHIR: Authentication Credential Leakage via Improper URL Prefix Matching on HTTP Redirect in HAPI FHIR Core CVSS 3.1CRITICAL 9.1
- TI-2026-40027 HAPI FHIR: DSTU2 FHIRPathEngine.matches() missing RegexTimeout protection allows ReDoS CVSS 3.1HIGH 7.5
- TI-2023-09835 HL7 (Health Level 7) FHIR Core Libraries before 5.6.92 allow attackers to extract files… CVSS 3.1HIGH 8.1
- TI-2026-26646 HAPI FHIR: Unauthenticated Blind SSRF via /loadIG Endpoint Enables Internal Network Probing CVSS 3.1MEDIUM 5.8
Sources
- CVE-2023-28465 · CVE Program
- CVE-2023-28465 · NVD
- FIRST EPSS
- GHSA-9654-pr4f-gh6m · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences