Improper access control in OpenEMR - #VU158866
Published: November 3, 2026
Vulnerability identifier: #VU158866
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-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to disclose sensitive patient demographic information across the practice, including names, dates of birth, addresses, contact details, and Social Security numbers.
The vulnerability exists due to missing patient-data access controls in the OpenEMR dynamic_finder_ajax.php handler when processing patient search requests. A remote user can request /interface/main/finder/dynamic_finder_ajax.php with caller-selected patient_data columns in the sColumns parameter to enumerate patient records and retrieve sensitive demographic fields without the patients/demo permission.
Affected software
OpenEMR
Remediation
Install security update from vendor's website.
OpenEMR - update to 8.5.0