# CVE-2026-124480

Auth bypass in OpenEMR FHIR API allows reading all patients' QuestionnaireResponses.

- Page: https://www.vulneraibility.com/cve/CVE-2026-124480
- CVSS: 8.7
- Known exploited: not in CISA KEV as of our last sync
- Weakness: CWE-862
- Also known as: GHSA-5xf2-3h9x-f4m6
- Published: 2026-11-08

## Affected versions

- openemr: affected < 8.4.0; fixed in 8.4.0

A version outside these ranges is not a statement that it is unaffected.

## Impact

Authenticated low‑privileged user can bypass FHIR scope checks and exfiltrate site‑wide QuestionnaireResponse PHI via GET /fhir/QuestionnaireResponse.

## Action

Immediate action required

## Recommendation

Upgrade to OpenEMR 8.4.0+, revoke exposed tokens, rotate creds, and audit access.

## References

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

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.