HAPI FHIR XML External Entity (XXE) vulnerability
An XML External Entity (XXE) vulnerability in HAPI FHIR before v6.4.0 allows attackers to access sensitive information or execute arbitrary code via supplying a crafted request containing malicious XML entities.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | ca.uhn.hapi.fhir:org.hl7.fhir.convertors | < 6.4.0 | 6.4.0 |
| Java / Kotlin (Maven) | ca.uhn.hapi.fhir:org.hl7.fhir.dstu2 | < 6.4.0 | 6.4.0 |
| Java / Kotlin (Maven) | ca.uhn.hapi.fhir:org.hl7.fhir.dstu2016may | < 6.4.0 | 6.4.0 |
| Java / Kotlin (Maven) | ca.uhn.hapi.fhir:org.hl7.fhir.dstu3 | < 6.4.0 | 6.4.0 |
| Java / Kotlin (Maven) | ca.uhn.hapi.fhir:org.hl7.fhir.r4 | < 6.4.0 | 6.4.0 |
| Java / Kotlin (Maven) | ca.uhn.hapi.fhir:org.hl7.fhir.r4b | < 6.4.0 | 6.4.0 |
| Java / Kotlin (Maven) | ca.uhn.hapi.fhir:org.hl7.fhir.r5 | < 6.4.0 | 6.4.0 |
| Java / Kotlin (Maven) | ca.uhn.hapi.fhir:org.hl7.fhir.utilities | < 6.4.0 | 6.4.0 |
| Java / Kotlin (Maven) | ca.uhn.hapi.fhir:org.hl7.fhir.validation | < 6.4.0 | 6.4.0 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-601, CWE-611- Platform
- Java / Kotlin (Maven)
- Package
ca.uhn.hapi.fhir:org.hl7.fhir.convertors, ca.uhn.hapi.fhir:org.hl7.fhir.dstu2, ca.uhn.hapi.fhir:org.hl7.fhir.dstu2016may- Disclosed
- 05.11.2024
- Updated
- 11.10.2026 12:21
Sources and licenses
OSV / GitHub Advisory Database - GHSA-4cf2-cxp3-rjr7 - CC BY 4.0
Vulnerability history: ca.uhn.hapi.fhir:org.hl7.fhir.utilities
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 8
- First → latest
- 01.2023 06.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 3
- High 5
Disclosures per year
- 2023: 2
- 2024: 3
- 2025: 0
- 2026: 3
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HAPI FHIR XML External Entity (XXE) vulnerability this entry
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