Add link to zlib v1.1.3 vulnerability (GH-17156)
diff --git a/Doc/library/zlib.rst b/Doc/library/zlib.rst
index 339acfd..ec60ea2 100644
--- a/Doc/library/zlib.rst
+++ b/Doc/library/zlib.rst
@@ -9,9 +9,9 @@
For applications that require data compression, the functions in this module
allow compression and decompression, using the zlib library. The zlib library
-has its own home page at http://www.zlib.net. There are known
+has its own home page at https://www.zlib.net. There are known
incompatibilities between the Python module and versions of the zlib library
-earlier than 1.1.3; 1.1.3 has a security vulnerability, so we recommend using
+earlier than 1.1.3; 1.1.3 has a `security vulnerability <https://zlib.net/zlib_faq.html#faq33>`_, so we recommend using
1.1.4 or later.
zlib's functions have many options and often need to be used in a particular
@@ -337,4 +337,3 @@
http://www.zlib.net/manual.html
The zlib manual explains the semantics and usage of the library's many
functions.
-