Origin validation error in FHIR - CVE-2026-34359

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Main Vulnerability Database Vulnerabilities #VU129395

Origin validation error in FHIR - CVE-2026-34359

Published: May 4, 2026


Vulnerability identifier: #VU129395
CSH Severity: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/U:Amber
CVE-ID: CVE-2026-34359
CWE-ID: CWE-346
Exploitation vector: Remote access
Exploit availability: Public exploit is available
Vulnerable software:
FHIR
Software vendor:
HAPI FHIR

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to improper URL prefix matching on HTTP redirect in HAPI FHIR core. A remote attacker can gain access to sensitive information on the system or modify data.


Remediation

Install updates from vendor's website.

External links