Ucum-java has an XXE vulnerability in XML parsing

published 2024-12-13 22 mo ago modified 2026-06-17 4 mo ago also GHSA-w9j7-phm3-f97j , EUVD-2024-3518

cvss: 8.6; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 46%
public exploits: 0; none known

Ucum-java is a FHIR Java library providing UCUM Services. In versions prior to 1.0.9, XML parsing performed by the UcumEssenceService is vulnerable to XML external entity injections. A processed XML file with a malicious DTD tag could produce XML containing data from the host system. This impacts use cases where ucum is being used to within a host where external clients can submit XML. Release 1.0.9 of Ucum-java fixes this vulnerability. As a workaround, ensure that the source xml for instantiating UcumEssenceService is trusted.

Patch / fix

fixed in 1

maven org.fhir:ucum 1.0.9

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-55887 updated 2026-11-04 cvss 8.6

ucum: Ucum-java has an XXE vulnerability in XML parsing

Red Hat Fuse 7 org.fhir/ucum org.fhir/ucum Red Hat Integration Camel K 1 org.fhir/ucum org.fhir/ucum
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 22 mo ago (2024-12-13)

Exploit prediction

0.56% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.6	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
GitHub	3.1	8.6	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
maven	org.fhir:ucum	<1.0.9	1.0.9

Affected products

FHIR Ucum-java

Classification

Weakness

CWE-611 Improper Restriction of XML External Entity Reference

References

github.com /FHIR/Ucum-java/security/advisories/GHSA-w9j7-phm3-f97j
web
nvd.nist.gov /vuln/detail/CVE-2024-55887
advisory
github.com /FHIR/Ucum-java
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary