[3.8] bpo-39603: Prevent header injection in http methods (GH-18485)#21537

miss-islington merged 1 commit intopython:3.8python/cpython:3.8from

miss-islington:backport-8ca8a2e-3.8miss-islington/cpython:backport-8ca8a2e-3.8Copy head branch name to clipboard