Requests (aka python-requests) before 2.3.0 allows remote servers to obtain a netrc password by reading the Authorization header in a redirected request.
http://advisories.mageia.org/MGASA-2014-0409.html
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=733108
https://github.com/kennethreitz/requests/issues/1885