{"action":"Upgrade ca.uhn.hapi.fhir:org.hl7.fhir.validation.cli to 6.9.10 or later.","affected":[{"fixed":"6.9.10","introduced":"0"}],"component":"ca.uhn.hapi.fhir:org.hl7.fhir.validation.cli","cve_ids":["CVE-2026-55470"],"ecosystem":"Maven","epss":0.0068,"exploited":false,"fixed_versions":["6.9.10"],"ghsa_id":"GHSA-fxj4-p9xp-37v5","id":"tcs_01M5N8WXXK7DEYFJHQJD7ECT2B","modified_at":"2026-06-17T19:11:27.800538Z","published_at":"2026-06-17T18:47:23Z","references":["https://osv.dev/vulnerability/GHSA-fxj4-p9xp-37v5","https://github.com/hapifhir/org.hl7.fhir.core/security/advisories/GHSA-fxj4-p9xp-37v5","https://github.com/hapifhir/org.hl7.fhir.core"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-fxj4-p9xp-37v5#Maven/ca.uhn.hapi.fhir:org.hl7.fhir.validation.cli","url":"https://osv.dev/vulnerability/GHSA-fxj4-p9xp-37v5"}],"summary":"HAPI FHIR: Incomplete fix for CVE-2026-45367: DSTU2 FHIRPathEngine.matches() missing RegexTimeout protection allows ReDoS"}