SCA: security update for ca.uhn.hapi.fhir:org.hl7.fhir.r5, ca.uhn.hapi.fhir:org.hl7.fhir.validation, ca.uhn.hapi.fhir:org.hl7.fhir.validation.cli (GHSA-gq9c-wmrm-5hvr)

high Tenable Cloud Security Plugin ID 448257

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

- HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java.
Prior to version 6.9.12, SHCParser in
org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/elementmodel/SHCParser.java can enter an infinite loop while
processing attacker-controlled Smart Health Card JWT content whose header contains zip: "DEF" and whose
raw-DEFLATE payload is empty or truncated. SHCParser.decodeJWT() reaches SHCParser.inflate(), where
Inflater.inflate() can return zero while Inflater.finished() remains false and Inflater.needsInput() is
true. The loop also lacks an Inflater.needsDictionary() termination check, SHCParser.decompress() contains
the same zero-progress pattern, and ResourceChecker.java can reach SHC parsing during file-format
detection. A malformed validation request can pin a JVM worker thread indefinitely, and concurrent
requests can exhaust all validation workers. This issue is fixed in version 6.9.12. (CVE-2026-81876)

Solution

Update the ca.uhn.hapi.fhir:org.hl7.fhir.r5 library and its related packages to version 6.9.12 or later.

See Also

https://github.com/advisories/GHSA-gq9c-wmrm-5hvr

Plugin Details

Severity: High

ID: 448257

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 9/23/2026

Updated: 9/23/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.6

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-81876

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 9/17/2026

Vulnerability Publication Date: 9/16/2026

Reference Information

CVE: CVE-2026-81876