Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Maven package ca.uhn.hapi.fhir:org.hl7.fhir.utilities versions before 6.9.10 are vulnerable to XML external entity injection through the saxonTransform methods of XsltUtilities, which create a Saxon transformer factory without disabling external access. An attacker who can supply or intercept the XML being transformed can read local files readable by the process and trigger requests to arbitrary URLs from the host. Upgrade to version 6.9.10, which contains the fix.
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 |
|---|---|---|---|---|
| 8.7 | High | 4.0 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0057, the 47th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:20 UTC First seen by agentprime
- 31 Oct 2026, 14:20 UTC Confirmed by OSV