{"id":"CVE-2026-126494","summary":"OpenEMR before 8.4.0 Privilege Escalation via SMART/OAuth Scope Finalization","details":"OpenEMR before 8.4.0 contains an improper authorization vulnerability in ScopeRepository::finalizeScopes() that allows read-only SMART/OAuth clients to obtain write scopes because ScopeEntity::containsScope() ignores registered permissions. Attackers with a client registered for user/\u003cresource\u003e.read can request user/\u003cresource\u003e.write to create, update, and delete appointments or patient data.","aliases":["GHSA-6cmr-r2rh-755m"],"modified":"2026-11-14T02:47:29.902596566Z","published":"2026-11-13T09:34:41.832Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-863"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126494.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126494.json"},{"type":"ADVISORY","url":"https://github.com/openemr/openemr/security/advisories/GHSA-6cmr-r2rh-755m"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126494"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/openemr-before-8.4.0-privilege-escalation-via-smart-oauth-scope-finalization"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/openemr/openemr","events":[{"introduced":"0"},{"fixed":"53d885e56d4772b4e48810a1f98531c5d19a934d"}],"database_specific":{"extracted_events":[{"source":"AFFECTED_FIELD","strategy":"StandardRange","range":[{"introduced":"0"},{"fixed":"8.4.0"}]}]}}],"versions":["v3_0_1","v3_0_0","v2_9_0","v2_8_3","v2_8_2","v2_8_1","v2_8_0","v2_7_3-rc1","v2_7_2","v2_7_2-rc2","v2_7_2-rc1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-126494.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N"}]}