The Requests package before 2.20.0 for Python sends an HTTP Authorization header to an http URI upon receiving a same-hostname https-to-http redirect, which makes it easier for remote attackers to discover credentials by sniffing the network.
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00024.html
https://access.redhat.com/errata/RHSA-2019:2035
https://bugs.debian.org/910766
https://github.com/requests/requests/commit/c45d7c49ea75133e52ab22a8e9e13173938e36ff
https://github.com/requests/requests/issues/4716
https://github.com/requests/requests/pull/4718
https://usn.ubuntu.com/3790-1/