CVE-2023-28465: The package-decompression feature in HL7 (Health Level 7) FHIR Core Libraries before 5.6.106 allows attackers

Q: How do I fix CVE-2023-28465?

hl7 fhir core: upgrade to 5.6.106. Exact commands for each OS are on this page.

Q: Is CVE-2023-28465 being exploited?

CVE-2023-28465 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-28465 affect?

CVE-2023-28465 affects hl7 fhir core. Severity is high (CVSS 7.5). The package-decompression feature in HL7 (Health Level 7) FHIR Core Libraries before 5.6.106 allows attackers to copy arbitrary files to certain directories via directory traversal, if an allowed directory name is a substring of the directo

Q: How urgent is CVE-2023-28465?

Priority 49/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADE

CVE-2023-28465 is a high-severity flaw (CVSS 7.5) affecting hl7 fhir core. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The package-decompression feature in HL7 (Health Level 7) FHIR Core Libraries before 5.6.106 allows attackers to copy arbitrary files to certain directories via directory traversal, if an allowed directory name is a substring of the directory name chosen by the attacker. NOTE: this issue exists because of an incomplete fix for CVE-2023-24057.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Weakness	CWE-22
Published	2023-12-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: hapifhir

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-12-12 17:15 UTCPublished CVE record published
2026-06-17 05:47 UTCUpdated Record last modified

hapifhir hl7 fhir core UPGRADE

Affected: < 5.6.106

Fixed in: 5.6.106

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy hl7-fhir-core || rpm -q hl7-fhir-core || hl7-fhir-core --version

2. UPGRADE to 5.6.106 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade hl7-fhir-core

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade hl7-fhir-core

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-28465?

hl7 fhir core: upgrade to 5.6.106. Exact commands for each OS are on this page.

Is CVE-2023-28465 being exploited?

CVE-2023-28465 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-28465 affect?

CVE-2023-28465 affects hl7 fhir core. Severity is high (CVSS 7.5). The package-decompression feature in HL7 (Health Level 7) FHIR Core Libraries before 5.6.106 allows attackers to copy arbitrary files to certain directories via directory traversal, if an allowed directory name is a substring of the directo

How urgent is CVE-2023-28465?

Priority 49/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-55471 CRITICAL 9.1 UPGRADE HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java
CVE-2026-55470 HIGH 7.5 UPGRADE HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java
CVE-2023-24057 HIGH 8.1 UPGRADE UPGRADE HL7 (Health Level 7) FHIR Core Libraries before 5.6.92 allow attackers to extract files into arbitrary directo

References

← Back to latest CVEs