In OpenEMR, versions 4.2.0 to 6.0.0 are vulnerable to Reflected Cross-Site-Scripting (XSS) due to user input not being validated properly. An attacker could trick a user to click on a malicious url and execute malicious code.

In OpenEMR, versions 2.7.3-rc1 to 6.0.0 are vulnerable to Stored Cross-Site-Scripting (XSS) due to user input not being validated properly in the `Allergies` section. An attacker could lure an admin to enter a malicious payload and by that initiate the exploit.

In OpenEMR, versions v2.7.2-rc1 to 6.0.0 are vulnerable to Improper Access Control when creating a new user, which leads to a malicious user able to read and send sensitive messages on behalf of the victim user.

In OpenEMR, versions 5.0.2 to 6.0.0 are vulnerable to Stored Cross-Site-Scripting (XSS) due to user input not being validated properly. A highly privileged attacker could inject arbitrary code into input fields when creating a new user.

In OpenEMR, versions 5.0.2 to 6.0.0 are vulnerable to Stored Cross-Site-Scripting (XSS) due to user input not being validated properly and rendered in the TOTP Authentication method page. A highly privileged attacker could inject arbitrary code into input fields when creating a new user.

In OpenEMR, versions 5.0.2 to 6.0.0 are vulnerable to Stored Cross-Site-Scripting (XSS) due to user input not being validated properly and rendered in the U2F USB Device authentication method page. A highly privileged attacker could inject arbitrary code into input fields when creating a new user.