Dromara MaxKey Meta URL SAML20DetailsController.java add server-side request forgery

A vulnerability was found in Dromara MaxKey up to 4.1.7 and classified as critical. This issue affects the function Add of the file maxkey-webs\maxkey-web-mgt\src\main\java\org\dromara\maxkey\web\apps\contorller\SAML20DetailsController.java of the component Meta URL Handler. The manipulation of the argument post leads to server-side request forgery. The attack may be initiated remotely. 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.