CVE-2026-124445 OpenEMR 7.0.1 before 8.4.0 OneTimeAuth Token Replay and PIN Brute Force

CriticalCVSS 9.3

Published: 2026-11-08 15:15
Updated: 2026-11-08 15:15
Exploit status: No public exploit known

Description

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.

Affected products

Product	Affected versions	Fixed in
openemr	>= 7.0.1, < 8.4.0	8.4.0

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

CVSS v4.0

9.3 Critical

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: None
User Interaction: None
Vulnerable System Confidentiality: High
Vulnerable System Integrity: High
Vulnerable System Availability: High
Subsequent System Confidentiality: None
Subsequent System Integrity: None
Subsequent System Availability: None

All scores (2)

v4.0 9.3 · vulncheck
v3.1 9.8 · vulncheck

Weakness & likelihood

EPSS (exploitation probability, 30 days): Not available
CWE: CWE-307 Improper Restriction of Excessive Authentication Attempts

Public exploit references

Metadata only. CVERadar never hosts or runs exploit code.

No public exploit references known.