OpenEMR before 8.3.0 contains an insecure direct object reference vulnerability in portal/lib...

OpenEMR before 8.3.0 contains an insecure direct object reference vulnerability in portal/lib/persist.php that allows authenticated portal patients to modify other patients' settings by supplying an arbitrary setting_patient value. Attackers can insert or overwrite patient_settings rows for victims to suppress notifications, tamper with consent flags, or alter portal preferences.