{"id":"CVE-2026-124462","published":"2026-11-08T14:18:14.010","lastModified":"2026-11-10T21:46:29.660","description":"OpenEMR before 8.3.0 contains an insecure direct object reference vulnerability in OnsiteDocumentController::Query() that allows authenticated portal patients to bypass the lowercase pid authorization guard by supplying a capitalised Pid parameter. Attackers can request the api/onsitedocuments endpoint with Pid set to another patient's id to overwrite the session-pinned criteria and read other patients' onsite documents containing PHI.","cvssScore":6.5,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","cwes":["CWE-639"],"vendors":[],"products":[],"references":[{"url":"https://github.com/openemr/openemr/security/advisories/GHSA-39jh-r9hg-rwg7","tags":[]},{"url":"https://www.vulncheck.com/advisories/openemr-before-8.3.0-patient-portal-idor-via-case-sensitive-pid-parameter","tags":[]}],"exploitRefs":[{"url":"https://github.com/openemr/openemr/security/advisories/GHSA-39jh-r9hg-rwg7","tags":[]}],"hasPoc":true,"ai":null}