{"affected":[{"defaultStatus":"unaffected","product":"openemr","source":"CNA: VulnCheck","vendor":"openemr","versions":[{"lessThan":"8.4.0","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"8.4.0","versionType":"semver"}]}],"cveId":"CVE-2026-124464","cwes":["CWE-639"],"description":"OpenEMR before 8.4.0 contains an authorization bypass vulnerability that allows patient-scoped SMART tokens to read other patients' questionnaire responses because FhirQuestionnaireResponseService does not implement IPatientCompartmentResourceService. Attackers holding a patient/QuestionnaireResponse.rs token can request responses by uuid or list the unfiltered bundle to obtain cross-patient clinical assessment answers.","epss":{"date":"2026-11-10","percentile":0.19885,"score":0.00273},"exploits":[],"kev":null,"metrics":[{"score":7.1,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},{"score":6.5,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},{"score":7.1,"severity":"high","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","version":"4.0"},{"score":6.5,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}],"modifiedAt":1794333300043,"publishedAt":1794143750569,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/openemr/openemr/security/advisories/GHSA-fmmr-p679-97fq"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/openemr-before-8.4.0-fhir-patient-compartment-bypass-via-questionnaireresponse"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/openemr/openemr/security/advisories/GHSA-fmmr-p679-97fq"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/openemr-before-8.4.0-fhir-patient-compartment-bypass-via-questionnaireresponse"}],"remediation":[],"revision":"022731608af5595dc93b189616c32fe8af6cd902151e84defd247cca0fea43ef","sources":[{"modifiedAt":1794333300043,"name":"CNA: VulnCheck","retrievedAt":1794334258826,"url":"https://www.cve.org/CVERecord?id=CVE-2026-124464"},{"modifiedAt":1794147494320,"name":"NVD","retrievedAt":1794161769039,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-124464"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794334280936,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-124464"}],"ssvc":{"assessedAt":1794325344870,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"OpenEMR before 8.4.0 FHIR Patient Compartment Bypass via QuestionnaireResponse","updatedAt":1794334280936}