CVE-2026-124480

HIGH 8.8

OpenEMR before 8.4.0 Authorization Bypass via FHIR QuestionnaireResponse APICSRFTOKEN

CVSS Score

8.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-862
Vendor	openemr
Product	openemr
Published	Nov 8, 2026

Stay Ahead of the Next One

Get instant alerts for openemr openemr

Be the first to know when new high vulnerabilities affecting openemr openemr are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

openemr / openemr

0 < 8.4.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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