"To leak the document" means to deliberately release or make public a document, often confidential or classified, without authorization or permission. Full definition
At the same time, leaked documents revealed the company intended leaving the tablet business by the end of the year, in favor of using third party partner devices. (macnn.com)
We will continue to leak documents for the next seven days. (cusos.org)
People who publish leaked documents without winding up endorsing a president who is evil and stupid. (theguardian.com)