---
id: CVE-2026-124480
title: >-
  OpenEMR before 8.4.0 Authorization Bypass via FHIR QuestionnaireResponse
  APICSRFTOKEN
summary: >-
  OpenEMR before 8.4.0 contains an authorization bypass vulnerability that
  allows low-privileged authenticated users to read cross-patient FHIR
  QuestionnaireResponse data by sending the APICSRFTOKEN header. Attackers can
  reuse the session-…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-862
vendor: openemr
product: openemr
affected:
  - openemr < 8.4.0
published: '2026-11-08'
updated: '2026-11-08'
sourceUpdated: '2026-11-08T13:16:00.035Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-124480'
references:
  - url: 'https://github.com/openemr/openemr/security/advisories/GHSA-5xf2-3h9x-f4m6'
    label: GitHub Security Advisory (GHSA-5xf2-3h9x-f4m6)
  - url: >-
      https://www.vulncheck.com/advisories/openemr-before-8.4.0-authorization-bypass-via-fhir-questionnaireresponse-apicsrftoken
    label: >-
      VulnCheck Advisory: OpenEMR before 8.4.0 Authorization Bypass via FHIR
      QuestionnaireResponse APICSRFTOKEN
tags:
  - cve.org
ingestedAt: '2026-11-08T13:50:34.963Z'
---

## Overview

OpenEMR before 8.4.0 contains an authorization bypass vulnerability that allows low-privileged authenticated users to read cross-patient FHIR QuestionnaireResponse data by sending the APICSRFTOKEN header. Attackers can reuse the session-exposed api_csrf_token_js value to skip FHIR scope checks and call GET /fhir/QuestionnaireResponse, exfiltrating site-wide questionnaire answer PHI.

## Affected

- `openemr < 8.4.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.