Auth bypass in Openemr
CVE-2026-124453
OpenEMR before 8.3.0 contains an insecure direct object reference vulnerability in portal/lib/persist.php that allows authenticated portal patients to write settings for other patients. Attackers can modify the setting_patient parameter in a JSON POST request to another patient's PID, altering that patient's portal settings such as the portal theme.
Vulnerability class: IDOR (Insecure Direct Object Reference)
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:L/I:H/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-rrw3-g25h-x68h) (vendor-advisory)
- VulnCheck Advisory: OpenEMR before 8.3.0 IDOR in Portal Patient Settings via persist.php (third-party-advisory)
Frequently asked questions
- What is CVE-2026-124453?
- CVE-2026-124453 is a high-severity vulnerability in Openemr, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.1/10. Published 2026-11-08.
- How severe is CVE-2026-124453?
- High severity. CVSS v3 base score is 7.1 out of 10.