Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Six Maven packages in the org.hl7.fhir.core family are affected before version 6.4.0: org.hl7.fhir.dstu3, org.hl7.fhir.r4, org.hl7.fhir.r4b, org.hl7.fhir.r5, org.hl7.fhir.utilities, and org.hl7.fhir.dstu2016may. XSLT parsing in these components is vulnerable to XML external entity injection, where a crafted XML file with a malicious DTD can expose data from the host system. An attacker who can submit XML to a host using these libraries could read local files. Upgrade to version 6.4.0 or later. The source gives few details on specific attack conditions.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 8.6 | High | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0090, the 59th percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:21 UTC First seen by agentprime
- 31 Oct 2026, 14:21 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-gr3c-q7xf-47vh
- OSV: GHSA-gr3c-q7xf-47vh
- github.com/hapifhir/org.hl7.fhir.core/security/advisories/GHSA-6cr6-ph3p-f5rf
- github.com/hapifhir/org.hl7.fhir.core/security/advisories/GHSA-gr3c-q7xf-47vh
- nvd.nist.gov/vuln/detail/CVE-2024-52007
- github.com/hapifhir/org.hl7.fhir.core/issues/1571
- github.com/hapifhir/org.hl7.fhir.core/pull/1717
- cheatsheetseries.owasp.org/cheatsheets/XML_External_Entity_Prevention_Cheat_Sheet.html#jaxp-documentbuilderfactory-saxparserfactory-and-dom4j
- cwe.mitre.org/data/definitions/611.html
- github.com/hapifhir/org.hl7.fhir.core