A vulnerability, which was classified as problematic, has been found in ChurchCRM 5.16.0. Affected by this issue is some unknown functionality of the component Referer Handler. The manipulation leads to server-side request forgery. The attack may be launched remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.