Answer in brief
CVE-2026-33180 records a High severity (CVSS 7.5) vulnerability in HAPI FHIR HTTP authentication leak in redirects. The current sources do not mark it as known exploited. The current feed maps hapifhir/org.hl7.fhir.core (generic), ca.uhn.hapi.fhir:org.hl7.fhir.convertors (maven), ca.uhn.hapi.fhir:org.hl7.fhir.dstu2 (maven), ca.uhn.hapi.fhir:org.hl7.fhir.dstu2016may (maven) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps hapifhir/org.hl7.fhir.core (generic), ca.uhn.hapi.fhir:org.hl7.fhir.convertors (maven), ca.uhn.hapi.fhir:org.hl7.fhir.dstu2 (maven), ca.uhn.hapi.fhir:org.hl7.fhir.dstu2016may (maven) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| hapifhir/org.hl7.fhir.coregeneric | < 6.9.0 | Not reported |
| ca.uhn.hapi.fhir:org.hl7.fhir.convertorsmaven | >=0 <6.9.0 | 6.9.0 |
| ca.uhn.hapi.fhir:org.hl7.fhir.dstu2maven | >=0 <6.9.0 | 6.9.0 |
| ca.uhn.hapi.fhir:org.hl7.fhir.dstu2016maymaven | >=0 <6.9.0 | 6.9.0 |
| ca.uhn.hapi.fhir:org.hl7.fhir.dstu3maven | >=0 <6.9.0 | 6.9.0 |
| ca.uhn.hapi.fhir:org.hl7.fhir.dstu3.supportmaven | >=0 <6.9.0 | 6.9.0 |
| ca.uhn.hapi.fhir:org.hl7.fhir.modelmaven | >=0 <6.9.0 | 6.9.0 |
| ca.uhn.hapi.fhir:org.hl7.fhir.r4maven | >=0 <6.9.0 | 6.9.0 |
| ca.uhn.hapi.fhir:org.hl7.fhir.r4bmaven | >=0 <6.9.0 | 6.9.0 |
| ca.uhn.hapi.fhir:org.hl7.fhir.r5maven | >=0 <6.9.0 | 6.9.0 |
| ca.uhn.hapi.fhir:org.hl7.fhir.utilitiesmaven | >=0 <6.9.0 | 6.9.0 |
| ca.uhn.hapi.fhir:org.hl7.fhir.validationmaven | >=0 <6.9.0 | 6.9.0 |
| ca.uhn.hapi.fhir:org.hl7.fhir.validation.climaven | >=0 <6.9.0 | 6.9.0 |
Published upstream
Mar 20, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 15, 2026
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.
Quoted source text, attributed separately from HOL analysis.