{"action":"Upgrade ca.uhn.hapi.fhir:org.hl7.fhir.core to 6.9.4 or later.","affected":[{"fixed":"6.9.4","introduced":"0"}],"component":"ca.uhn.hapi.fhir:org.hl7.fhir.core","cve_ids":["CVE-2026-34359"],"ecosystem":"Maven","epss":0.00164,"exploited":false,"fixed_versions":["6.9.4"],"ghsa_id":"GHSA-fgv2-4q4g-wc35","id":"tcs_01M5N8W00ZTYFJ43H7WXGEV1EB","modified_at":"2026-03-31T19:04:15.554536Z","published_at":"2026-03-30T17:19:21Z","references":["https://osv.dev/vulnerability/GHSA-fgv2-4q4g-wc35","https://github.com/hapifhir/org.hl7.fhir.core/security/advisories/GHSA-fgv2-4q4g-wc35","https://nvd.nist.gov/vuln/detail/CVE-2026-34359","https://github.com/hapifhir/org.hl7.fhir.core"],"severity":{"label":"high","score":7.4},"sources":[{"source":"osv","source_id":"GHSA-fgv2-4q4g-wc35","url":"https://osv.dev/vulnerability/GHSA-fgv2-4q4g-wc35"}],"summary":"HAPI FHIR Core has Authentication Credential Leakage via Improper URL Prefix Matching on HTTP Redirect"}