Auth bypass in Openemr
CVE-2026-124456
OpenEMR before 8.3.0 contains missing authorization and insecure direct object reference vulnerabilities in the oe-module-prior-authorizations module that allow authenticated low-privilege users to access and modify other patients' records. Attackers can request public/reports/list_report.php to view all patients' names, MRNs, insurance and prior-auth data, or submit arbitrary id values to public/index.php to overwrite other patients' prior-authorization records.
Vulnerability class: Broken Access Control
Published .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N.
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 Security Advisory (GHSA-9cgf-m88m-9cvx) (vendor-advisory)
- VulnCheck Advisory: OpenEMR before 8.3.0 Missing Authorization and IDOR in Prior-Authorizations Module (third-party-advisory)
Frequently asked questions
- What is CVE-2026-124456?
- CVE-2026-124456 is a high-severity vulnerability in Openemr, classified under Missing Authorization. CVSS score: 7.1/10. Published 2026-11-08.
- How severe is CVE-2026-124456?
- High severity. CVSS v3 base score is 7.1 out of 10.