Vulnerability Description
OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.0.0, an unauthenticated token disclosure vulnerability in the MedEx callback endpoint allows any unauthenticated visitor to obtain the practice's MedEx API tokens, leading to complete third-party service compromise, PHI exfiltration, unauthorized actions on the MedEx platform, and HIPAA violations. The vulnerability exists because the endpoint bypasses authentication ($ignoreAuth = true) and performs a MedEx login whenever $_POST['callback_key'] is provided, returning the full JSON response including sensitive API tokens. This vulnerability is fixed in 8.0.0.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Open-Emr | Openemr | < 8.0.0 |
Related Weaknesses (CWE)
References
- https://github.com/openemr/openemr/commit/8e4de59ab58222f13abc4e4040128737d857dbPatch
- https://github.com/openemr/openemr/security/advisories/GHSA-qwff-3mw7-7rc7ExploitVendor Advisory
FAQ
What is CVE-2026-24898?
CVE-2026-24898 is a vulnerability with a CVSS score of 10.0 (CRITICAL). OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.0.0, an unauthenticated token disclosure vulnerability in the MedEx callback endpoin...
How severe is CVE-2026-24898?
CVE-2026-24898 has been rated CRITICAL with a CVSS base score of 10.0/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-24898?
Check the references section above for vendor advisories and patch information. Affected products include: Open-Emr Openemr.