Add release notes for 5.1.6

Author: markstory

2025/02/23/cakephp_516.rst

@@ -0,0 +1,51 @@
+CakePHP 5.1.6
+==============
+
+The CakePHP core team is happy to announce the immediate availability of CakePHP
+5.1.6. This is a maintenance release for the 5.1 branch that fixes several
+community reported issues and regressions. If you are having problems with the framework
+breaking your application when you upgrade from 5.0.11 to 5.1, please open an
+`issue <https://github.com/cakephp/cakephp/issues/new?template=bug_report.yml>`_.
+
+Bugfixes
+--------
+
+You can expect the following changes in 5.1.6. See the `changelog
+<https://github.com/cakephp/cakephp/compare/5.1.5...5.1.6>`_ for every commit.
+
+- Updated ``Session::renew()`` to avoid samesite warnings.
+- Errors caused by requests to URLs like ``index.php?<>?`` now have error pages
+  rendered instead of empty 500 responses.
+- Improved behavior of ``requireFieldPresence`` in entities.
+- ``MissingActionException`` raised in plugins now correctly name the
+  controller + action in the error message.
+- Added IPv6 support to datasource DSN parsing.
+- ``Http\Client`` no longer overwrites an explicit content type with
+  ``application/x-form-urlencoded`` when an empty request body is provided.
+- ``FormHelper::postLink()`` now uses ``HtmlElement.requestSubmit()`` instead of
+  ``.submit()``. This allows ``submit`` event handlers to intercept requests
+  from ``postLink()`` buttons.
+
+Contributors to 5.1.6
+----------------------
+
+Thank you to all the contributors that submitted a pull request:
+
+- ADmad
+- Alberto G. Rodriguez
+- Kevin Pfeifer
+- Mark Scherer
+- Mark Story
+- Mirko Pagliai
+- othercorey
+- Markus Ramšak
+
+As always, we would like to also thank all the contributors that opened issues,
+or updated the documentation.
+
+Download a `packaged release on github
+<https://github.com/cakephp/cakephp/releases>`_.
+
+.. author:: markstory
+.. categories:: release, news
+.. tags:: release, news, security

master.rst

@@ -4,6 +4,7 @@ Sitemap
 .. toctree::
    :maxdepth: 1
 
+   2025/02/23/cakephp_516
    2025/02/09/cakephp_460RC1
    2025/01/16/cakephp_515
    2025/01/04/cakephp_459