Issue #9983: warn that urllib and httplib don't perform SSL certificate validation.
diff --git a/Doc/library/urllib.request.rst b/Doc/library/urllib.request.rst
index 1578968..4a897ad 100644
--- a/Doc/library/urllib.request.rst
+++ b/Doc/library/urllib.request.rst
@@ -11,6 +11,10 @@
opening URLs (mostly HTTP) in a complex world --- basic and digest
authentication, redirections, cookies and more.
+.. warning:: When opening HTTPS (or FTPS) URLs, it is not attempted to
+ validate the server certificate. Use at your own risk!
+
+
The :mod:`urllib.request` module defines the following functions: