{"id":"CVE-2026-124459","title":"OpenEMR before 8.3.0 Cross-Patient IDOR via Encounter Form Viewers and Save Handlers","summary":"OpenEMR before 8.3.0 contains an insecure direct object reference vulnerability in many encounter-form view and save endpoints that lack patient/encounter ownership checks. Authenticated clinical users can enumerate sequential form id va…","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","cvssSource":"cna","cwe":["CWE-639"],"vendor":"openemr","product":"openemr","affected":["openemr < 8.3.0"],"published":"2026-11-08","updated":"2026-11-08","sourceUpdated":"2026-11-08T13:15:47.168Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-124459","references":[{"url":"https://github.com/openemr/openemr/security/advisories/GHSA-3mg9-27fw-m9j6","label":"GitHub Security Advisory (GHSA-3mg9-27fw-m9j6)"},{"url":"https://www.vulncheck.com/advisories/openemr-before-8.3.0-cross-patient-idor-via-encounter-form-viewers-and-save-handlers","label":"VulnCheck Advisory: OpenEMR before 8.3.0 Cross-Patient IDOR via Encounter Form Viewers and Save Handlers"}],"tags":["cve.org"],"ingestedAt":"2026-11-08T13:50:34.969Z","slug":"CVE-2026-124459","body":"## Overview\n\nOpenEMR before 8.3.0 contains an insecure direct object reference vulnerability in many encounter-form view and save endpoints that lack patient/encounter ownership checks. Authenticated clinical users can enumerate sequential form id values in requests such as soap/view.php and save.php to read and overwrite other patients' clinical records.\n\n## Affected\n\n- `openemr < 8.3.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}