diff -Naur a/Modules/_ssl.c b/Modules/_ssl.c --- a/Modules/_ssl.c 2026-04-07 08:13:20.000000000 -0500 +++ b/Modules/_ssl.c 2026-04-19 17:40:55.497794723 -0500 @@ -909,6 +909,7 @@ #undef SID_CTX } +#ifndef LIBRESSL_VERSION_NUMBER /* bpo43522 and OpenSSL < 1.1.1l: copy hostflags manually */ #if OPENSSL_VERSION_NUMBER < 0x101010cf X509_VERIFY_PARAM *ssl_verification_params = SSL_get0_param(self->ssl); @@ -917,6 +918,7 @@ unsigned int ssl_ctx_host_flags = X509_VERIFY_PARAM_get_hostflags(ssl_ctx_verification_params); X509_VERIFY_PARAM_set_hostflags(ssl_verification_params, ssl_ctx_host_flags); #endif +#endif SSL_set_app_data(self->ssl, self); if (sock) { SSL_set_fd(self->ssl, Py_SAFE_DOWNCAST(sock->sock_fd, SOCKET_T, int)); @@ -3875,7 +3877,11 @@ unsigned int host_flags; ssl_verification_params = SSL_CTX_get0_param(self->ctx); - host_flags = X509_VERIFY_PARAM_get_hostflags(ssl_verification_params); +#ifdef LIBRESSL_VERSION_NUMBER + host_flags = 0; +#else + host_flags = X509_VERIFY_PARAM_get_hostflags(ssl_verification_params); +#endif return PyLong_FromUnsignedLong(host_flags); }