CVE-2026-24898

CRITICAL EPSS 42.1%
Published Mar 3, 20264mo ago · Modified Jun 17, 20262w ago
9.8 CVSS 3.1
Critical
Find Similar
Published Mar 3, 2026 4mo ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
42.1% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-287 Improper Authentication Authentication

Affected Products 1

VendorProductVersionRange
open-emropenemr* <8.0.0

References 2

  • github.com https://github.com/openemr/openemr/commit/8e4de59ab58222f13abc4e4040128737d857db9c
    Patch
  • github.com https://github.com/openemr/openemr/security/advisories/GHSA-qwff-3mw7-7rc7
    ExploitVendor Advisory

Remediation

  • github.com https://github.com/openemr/openemr/commit/8e4de59ab58222f13abc4e4040128737d857db9c
    Patch