The python-requests module has been updated to version 2.8.1, which brings several fixes and enhancements:
Fix handling of cookies on redirect. Previously a cookie without a host value set would use the hostname for the redirected URL exposing requests users to session fixation attacks and potentially cookie stealing. (bsc#922448, CVE-2015-2296)
Add support for per-host proxies. This allows the proxies dictionary to have entries of the form {'<scheme>://<hostname>': '<proxy>'}. Host-specific proxies will be used in preference to the previously-supported scheme-specific ones, but the previous syntax will continue to work.
For a comprehensive list of changes please refer to the package's change log or the Release Notes at http://docs.python-requests.org/en/latest/community/updates/#id3