What is CVE-2026-124445?

CVE-2026-124445 is a critical-severity vulnerability in Openemr, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 9.8/10. Published 2026-11-08.

How severe is CVE-2026-124445?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Openemr

CVE-2026-124445

OpenEMR from 7.0.1 before 8.4.0 contains a flaw in src/Common/Auth/OneTimeAuth.php that ignores the enforce_onetime_use and max_access_count flags, never revokes consumed service_auth tokens, and checks login_pin without rate limiting or strict comparison. Attackers holding a captured token can replay it or brute-force the PIN to open patient-portal sessions exposing PHI.

Published 2026-11-08.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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-307 — Improper Restriction of Excessive Authentication Attempts

References

GitHub Security Advisory (GHSA-xg3m-9pfq-c8r6) (vendor-advisory)
VulnCheck Advisory: OpenEMR 7.0.1 before 8.4.0 OneTimeAuth Token Replay and PIN Brute Force (third-party-advisory)

Frequently asked questions

What is CVE-2026-124445?: CVE-2026-124445 is a critical-severity vulnerability in Openemr, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 9.8/10. Published 2026-11-08.
How severe is CVE-2026-124445?: Critical severity. CVSS v3 base score is 9.8 out of 10.