---
id: "CVE-2026-124464"
page: "https://infrastack.ai/live/CVE-2026-124464"
kind: "vulnerability"
aliases: ["CVE-2026-124464"]
title: "OpenEMR: patient SMART tokens read other patients' questionnaire responses"
severity: "high"
cvss: 7.1
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["fhir", "healthcare", "openemr", "other", "self-hosted", "smart-on-fhir"]
not_affected_if: ["no-patient-smart-tokens", "openemr-8.4.0-or-later"]
published_at: "2026-11-08T14:18:14+00:00"
first_seen_at: "2026-11-08T14:48:40+00:00"
updated_at: "2026-11-08T14:49:41+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-124464", "first_seen_at": "2026-11-08T14:48:40+00:00"}]
exploit_sources: []
---

# OpenEMR: patient SMART tokens read other patients' questionnaire responses

Link for people: https://infrastack.ai/live/CVE-2026-124464 (this .md is for agents)

OpenEMR before 8.4.0 lets a patient-scoped SMART token read other patients' questionnaire responses, because the FHIR QuestionnaireResponse service skips the patient filter. An attacker holding such a token can fetch a response by UUID or list the unfiltered bundle to obtain other patients' clinical assessment answers.

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

## How to check

- Check the installed OpenEMR version; the sources say versions before `8.4.0` are affected.
- Check whether SMART-on-FHIR patient apps or patient-scoped tokens are enabled for `patient/QuestionnaireResponse.rs` scope.

## 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-2026-124464

## Documents

- [advisory] Vendor advisory: github.com https://github.com/openemr/openemr/security/advisories/GHSA-fmmr-p679-97fq
- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/openemr-before-8.4.0-fhir-patient-compartment-bypass-via-questionnaireresponse

## From the sources

OpenEMR before 8.4.0 contains an authorization bypass vulnerability that allows patient-scoped SMART tokens to read other patients' questionnaire responses because FhirQuestionnaireResponseService does not implement IPatientCompartmentResourceService. Attackers holding a patient/QuestionnaireResponse.rs token can request responses by uuid or list the unfiltered bundle to obtain cross-patient clinical assessment answers.

---

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