Improper access control in OpenEMR - #VU158860
Published: November 3, 2026
Vulnerability identifier: #VU158860
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/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 modify clinical-rule records despite having only read-only medical permission.
The vulnerability exists due to improper access control in OpenEMR's clinical-rule editor at interface/patient_file/rules/patient_data.php when processing record updates without requiring write permission. A remote user can submit a POST request containing an existing form_entryID and replacement values while holding patients/med=view permission to change the record's completion date, completion state, and free-text result.
Affected software
OpenEMR
Remediation
Install security update from vendor's website.
OpenEMR - update to 8.5.0