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Critical 10.0HealthcarePublished Mar 3, 2026

CVE-2026-24898OpenEMR has an Unauthenticated MedEx Token Disclosure

Updated under an hour ago ()

Does this affect you?

It affects openemr and 1 other product. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.56%, higher than 46% of scored CVEs.

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
10.0 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness (CWE)
CWE-287
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
0.56% (percentile 46)
Assigned by
GitHub_M
NVD analysis
Analyzed
Record last updated
Mar 4, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
openemr openemr
openemr:openemr (from the name)
before 8.0.0
CNA record
open-emr openemr
open-emr:openemr
before 8.0.0
NVD

References

  • x-refsource-confirm, exploit, vendor-advisory
  • x-refsource-misc, patch

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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