High 7.5HealthcarePublished Mar 20, 2026

CVE-2026-33180HAPI FHIR HTTP authentication leak in redirects

Updated under an hour ago (2026-10-19 08:10 UTC)

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It affects hapifhir org.hl7.fhir.core and 1 other product. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.47%, higher than 39% of scored CVEs.

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Every CVE for hapifhir org.hl7.fhir.core

Exploited in the last 30 days

HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior to version 6.9.0, when setting headers in HTTP requests, the internal HTTP client sends headers first to the host in the initial URL but also, if asked to follow redirects and a 30X HTTP response code is returned, to the host mentioned in URL in the Location: response header value. Sending the same set of headers to subsequent hosts is a problem as this header often contains privacy sensitive information or data that could allow others to impersonate the client's request. This issue has been patched in release 6.9.0. No known workarounds are available.

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-200, CWE-201
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.47% (percentile 39)
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Jul 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

hapifhir org.hl7.fhir.core hapifhir:org.hl7.fhir.core (from the name)	before 6.9.0	CNA record
Red Hat Red Hat Fuse 7 redhat:jboss_fuse	7	CISA ADP

References

https://github.com/hapifhir/org.hl7.fhir.core/security/advisories/GHSA-p7m9-v2cm-2h7mx-refsource-confirm
https://access.redhat.com/security/cve/CVE-2026-33180
https://bugzilla.redhat.com/show_bug.cgi?id=2449841
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33180.json

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.