---
id: "CVE-2026-124480"
page: "https://infrastack.ai/live/CVE-2026-124480"
kind: "vulnerability"
aliases: ["CVE-2026-124480"]
title: "OpenEMR: low-privilege users can read other patients' questionnaire health data"
severity: "high"
cvss: 8.8
epss: null
exploited: false
status: "open"
category: "other"
products: [{"name": "OpenEMR", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["fhir", "healthcare", "openemr", "other", "self-hosted"]
not_affected_if: ["no-fhir-api", "openemr-8.4.0-or-later"]
published_at: "2026-11-08T14:18:17+00:00"
first_seen_at: "2026-11-08T14:48:41+00:00"
updated_at: "2026-11-08T14:48:57+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-124480", "first_seen_at": "2026-11-08T14:48:41+00:00"}]
exploit_sources: []
---

# OpenEMR: low-privilege users can read other patients' questionnaire health data

Link for people: https://infrastack.ai/live/CVE-2026-124480 (this .md is for agents)

OpenEMR before 8.4.0 lets a low-privileged logged-in user skip FHIR scope checks by sending the APICSRFTOKEN header with a session-exposed token. An attacker can then call the QuestionnaireResponse FHIR endpoint and read site-wide questionnaire answers containing protected health information.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:OpenEMR affected range not listed fixed no fixed version listed

## How to check

- Check the OpenEMR version in the installed files or admin footer; versions below `8.4.0` are in scope.
- Confirm whether the FHIR API is enabled for your site.

## Fix

- Upgrade OpenEMR to `8.4.0` or later.

## Timeline

- 2026-11-08T14:48:41+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-124480

## Documents

- [advisory] Vendor advisory: github.com https://github.com/openemr/openemr/security/advisories/GHSA-5xf2-3h9x-f4m6
- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/openemr-before-8.4.0-authorization-bypass-via-fhir-questionnaireresponse-apicsrftoken

## From the sources

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.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_