OpenEMR version 5.0.0 contains a Cross Site Scripting (XSS) vulnerability in open-flash-chart.swf and posteddata.php that can result in . This vulnerability appears to have been fixed in 5.0.0 Patch 2 or higher.

OpenEMR version 5.0.0 contains a OS Command Injection vulnerability in faxdispatch.php that can result in OS command injection by an authenticated attacker with any role. This vulnerability appears to have been fixed in 5.0.0 Patch 2 or higher.

Reflected XSS in interface/forms/eyemag/view.php in OpenEMR 5.x before 5.0.2.1 allows a remote attacker to execute arbitrary code in the context of a user's session via the pid parameter.

In OpenEMR, versions 5.0.0 to 6.0.0.1 are vulnerable to weak password requirements as it does not enforce a maximum password length limit. If a malicious user is aware of the first 72 characters of the victim user’s password, he can leverage it to an account takeover.