CVE-2026-126473

CriticalCVSS 9.1/10Last modified Nov 13, 2026

Description

OpenEMR before 8.4.0 contains OAuth scope canonicalization and containment flaws that allow unauthenticated attackers to obtain unapproved system-level FHIR access. Attackers can register a colon-form system:Patient.read client that bypasses approval, then request unregistered system/Patient.write scope to read, modify, and create Patient records.

Metrics

CVSS 3.1 9.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-863

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

No affected versions have been published.

Timeline

Published
Nov 13, 2026
Last modified
Nov 13, 2026
NVD status
Awaiting Analysis

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CVE-2026-126473: Critical severity, CVSS 9.1 | Vulnix