Requests is an HTTP library for human beings.
Requests is vulnerable to potentially leaking Proxy-Authorization headers to destination servers, specifically during redirects to an HTTPS origin with authentication credentials encoded into the URL.
Users' proxy authentication secrets could be disclosed to parties beyond the used HTTP proxy server.
There is no known workaround at this time.
All Requests users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-python/requests-2.31.0"