CVE-2026-33180
HAPI FHIR HTTP authentication leak in redirects
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| redhat-SADPADP (enrichment) | 3.1 | High8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N |
| NVDNVD · Deferred | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.28% · top 79% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
- affected < 6.9.0
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavenca.uhn.hapi.fhir:org.hl7.fhir.convertorsGHSA-p7m9-v2cm-2h7m (opens in a new tab)
- Mavenca.uhn.hapi.fhir:org.hl7.fhir.dstu2GHSA-p7m9-v2cm-2h7m (opens in a new tab)
- Mavenca.uhn.hapi.fhir:org.hl7.fhir.dstu2016mayGHSA-p7m9-v2cm-2h7m (opens in a new tab)
- Mavenca.uhn.hapi.fhir:org.hl7.fhir.dstu3GHSA-p7m9-v2cm-2h7m (opens in a new tab)
- Mavenca.uhn.hapi.fhir:org.hl7.fhir.dstu3.supportGHSA-p7m9-v2cm-2h7m (opens in a new tab)
- Mavenca.uhn.hapi.fhir:org.hl7.fhir.modelGHSA-p7m9-v2cm-2h7m (opens in a new tab)
- Mavenca.uhn.hapi.fhir:org.hl7.fhir.r4GHSA-p7m9-v2cm-2h7m (opens in a new tab)
- Mavenca.uhn.hapi.fhir:org.hl7.fhir.r4bGHSA-p7m9-v2cm-2h7m (opens in a new tab)
- Mavenca.uhn.hapi.fhir:org.hl7.fhir.r5GHSA-p7m9-v2cm-2h7m (opens in a new tab)
- Mavenca.uhn.hapi.fhir:org.hl7.fhir.utilitiesGHSA-p7m9-v2cm-2h7m (opens in a new tab)
- Mavenca.uhn.hapi.fhir:org.hl7.fhir.validationGHSA-p7m9-v2cm-2h7m (opens in a new tab)
- Mavenca.uhn.hapi.fhir:org.hl7.fhir.validation.cliGHSA-p7m9-v2cm-2h7m (opens in a new tab)
References (4)
- https://github.com/hapifhir/org.hl7.fhir.core/security/advisories/GHSA-p7m9-v2cm-2h7m (opens in a new tab)x_refsource_CONFIRM
- https://access.redhat.com/security/cve/CVE-2026-33180 (opens in a new tab)vdb-entryx_refsource_REDHAT
- RHBZ#2449841 (opens in a new tab)issue-trackingx_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33180.json (opens in a new tab)x_sadp-csaf-vex
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-p7m9-v2cm-2h7m (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-33180)Record last updated .