What is CVE-2026-124489?

CVE-2026-124489 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-2026-124489?

High severity. CVSS v3 base score is 7.1 out of 10.

Auth bypass in Openemr

CVE-2026-124489

OpenEMR before 8.3.0 contains a broken access control vulnerability in portal/portal_payment.php that allows low-privilege authenticated users to bypass billing ACL checks by tampering patient identifiers. Attackers can modify the pid and form_pid parameters to view payment pages and record fraudulent payment receipts for arbitrary patients, corrupting billing records.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published 2026-11-08.

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

Openemr

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

GitHub Security Advisory (GHSA-j2cx-3p5q-ppx5) (vendor-advisory)
VulnCheck Advisory: OpenEMR before 8.3.0 Broken Access Control via portal_payment.php (third-party-advisory)

Frequently asked questions

What is CVE-2026-124489?: CVE-2026-124489 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-2026-124489?: High severity. CVSS v3 base score is 7.1 out of 10.