Improper Authentication in OpenEMR - CVE-2026-24898
Published: April 23, 2026
Vulnerability identifier: #VU127298
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-24898
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OpenEMR
Affected software:
OpenEMR
OpenEMR
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information and perform unauthorized actions on the MedEx platform.
The vulnerability exists due to improper authentication in the MedEx callback endpoint when handling a POST request containing a callback_key parameter. A remote attacker can send a specially crafted request to disclose sensitive information and perform unauthorized actions on the MedEx platform.
Only installations with the MedEx service enabled are vulnerable.
How to mitigate CVE-2026-24898
Install security update from vendor's website.