Typecho Ping Back Service Endpoint Service.php sendPingHandle server-side request forgery

A vulnerability was found in Typecho up to 1.3.0. This vulnerability affects the function Service::sendPingHandle of the file var/Widget/Service.php of the component Ping Back Service Endpoint. The manipulation of the argument X-Pingback/link results in server-side request forgery. The attack may be launched remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.