CVE-2026-124480

HIGH NVD

CVSS Score 8.8

Severity HIGH

Published Nov 08, 2026

Vendor unknown

Description

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.

References

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