markdown-pdf 11.0.0 - Local File Read via Server Side XSS

markdown-pdf version 11.0.0 allows an external attacker to remotely obtain arbitrary local files. This is possible because the application does not validate the Markdown content entered by the user.

A path traversal exists in markdown-pdf version <9.0.0 that allows a user to insert a malicious html code that can result in reading the local files.