by Kastro
Paper/Archive/CVE-2026-24898

CVE-2026-24898

openemr openemr — OpenEMR has an Unauthenticated MedEx Token Disclosure

EPSS 2%CVSS 10.0
critical.is priorityof 100
47
CVSS 10.0 (CNA)10.0 / 10 × 3030.0Not in CISA KEV+300.0EPSS percentile 84.2.842 × 2016.8No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
openemr< 8.0.0–CNA

Scores by source

GitHub_M (CNA)10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgithub.com/openemr/openemr/security/advisories/GHSA-qwff-3mw7-7rc7refgithub.com/openemr/openemr/commit/8e4de59ab58222f13abc4e4040128737d857db9c