CVE-2026-1965: fix incorrect connection reuse; prevent reuse of Negotiate-
authenticated connections with different credentials and require
authentication identity match
CVE-2026-3784: fix wrong proxy connection reuse with different credentials;
check proxy user/password in proxyinfomatches to prevent reuse of HTTP
proxy CONNECT connections when credentials differ
CVE-2026-3783: prevent bearer token leak on HTTP(S) redirect when .netrc
contains entries for the redirected host