Missing Authorization in OpenEMR - #VU158832
Published: November 3, 2026
Vulnerability identifier: #VU158832
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to disclose full patient demographic records and enumerate the entire patient roster in OpenEMR.
The vulnerability exists due to missing authorization in the Patient Validation module's PatientvalidationController::indexAction() when handling patient lookup requests. A remote user can send a direct GET request to /interface/modules/zend_modules/public/patientvalidation?mf_fname=&mf_lname=%&mf_DOB=&mf_pubpid= to retrieve all patient demographic records without per-patient authorization checks.
Affected software
OpenEMR
Remediation
Install security update from vendor's website.
OpenEMR - update to 8.5.0