The MDJM Event Management and Mobile Events Manager WordPress plugins through 1.7.8.7 do not check a capability or a nonce before creating a WordPress role from a name supplied in the request, and store that name without escaping it, allowing any authenticated user, such as a subscriber, to inject arbitrary web scripts which execute when an administrator opens one of the standard user management screens.

The MDJM Event Management and Mobile Events Manager WordPress plugins through 1.7.8.7 do not check a capability or a nonce before creating a WordPress role from a name supplied in the request, and store that name without escaping it, allowing any authenticated user, such as a subscriber, to inject arbitrary web scripts which execute when an administrator opens one of the standard user management screens.