Auth bypass in Openemr
CVE-2026-124483
OpenEMR before 8.4.0 contains an incorrect authorization vulnerability because the prescription REST API routes check the patients.med ACL instead of patients.rx and request no specific permission bit, so read-only Medical/History access passes the check. Authenticated staff users can reuse the UI-exposed APICSRFTOKEN to enumerate prescription UUIDs, forge prescriptions for arbitrary patients, and deactivate existing prescriptions tenant-wide.
Vulnerability class: Broken Access Control
Published .
CVSS v3 metric
CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/openemr/openemr/security/advisories/GHSA-qrc2-5wvq-f68q (vendor-advisory)
- www.vulncheck.com/advisories/openemr-before-8.4.0-improper-authorization-via-pr… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-124483?
- CVE-2026-124483 is a high-severity vulnerability in Openemr, classified under Incorrect Authorization. CVSS score: 8.3/10. Published 2026-11-08.
- How severe is CVE-2026-124483?
- High severity. CVSS v3 base score is 8.3 out of 10.