This update for python-aiohttp fixes the following issues
content_type parameter manipulation can lead to header injection (bsc#1261322).Cookie and Proxy-Authorization headers when following redirects can lead to information
disclosure (bsc#1261332).reason parameter can be use to perform header injection (bsc#1261334).Host headers allow for potential security bypass in proxy servers (bsc#1261343).CookieJar.load() can lead to arbitrary code execution (bsc#1267471).cookies parameter on requests are sent after following a cross-origin redirect
and can leak sensitive data (bsc#1267561).server_hostname TLS SNI check bypass when an existing connection is reused (bsc#1268549).max_line_size bypass when using the optimised C HTTP parser can lead to excessive resource
consumption (bsc#1268556).client_max_size during cleanup and cause a DoS
(bsc#1268559).CookieJar persistence (bsc#1268560).