---
id: "CVE-2026-124458"
page: "https://infrastack.ai/live/CVE-2026-124458"
kind: "vulnerability"
aliases: ["CVE-2026-124458"]
title: "OpenEMR: patient portal users can read staff personal details via FHIR"
severity: "high"
cvss: 7.1
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["fhir", "healthcare", "openemr", "runtime", "self-hosted"]
not_affected_if: ["fhir-api-disabled", "patient-portal-disabled"]
published_at: "2026-11-08T14:18:13+00:00"
first_seen_at: "2026-11-08T14:48:40+00:00"
updated_at: "2026-11-08T14:49:44+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-124458", "first_seen_at": "2026-11-08T14:48:40+00:00"}]
exploit_sources: []
---

# OpenEMR: patient portal users can read staff personal details via FHIR

Link for people: https://infrastack.ai/live/CVE-2026-124458 (this .md is for agents)

OpenEMR before 8.4.0 fails to enforce the patient compartment on the FHIR GET /fhir/Person/:uuid route. A patient-portal user with a SMART token holding patient/Person.read can read any staff member's name, home address, phone number and personal email.

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

## How to check

- Check the installed OpenEMR version against the fixed release in the product data.
- Confirm whether the FHIR API and patient portal are enabled on the deployment.

## Fix

- OpenEMR: move to `8.4.0` or later.

## Timeline

- 2026-11-08T14:48:40+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-124458

## Documents

- [advisory] Vendor advisory: github.com https://github.com/openemr/openemr/security/advisories/GHSA-ggpx-qgcr-w2gh
- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/openemr-before-8.4.0-fhir-patient-compartment-bypass-via-person-endpoint

## From the sources

OpenEMR before 8.4.0 contains an authorization bypass vulnerability in the FHIR GET /fhir/Person/:uuid route that allows patient-portal users to read any staff member's demographics by bypassing compartment enforcement. Attackers holding a patient SMART token with patient/Person.read can harvest staff Person UUIDs from Appointment references to retrieve names, home addresses, phone numbers, and personal emails.

---

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