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+# 3.0.12
+
+# Overview
+
+This release resolves a high level security issue in the SiteTree class, as well as 
+the CMS controller classes which act on these objects during creation.
+
+## Upgrading
+
+### SiteTree::canCreate Permissions
+
+Any user code which overrides the `SiteTree::canCreate` method should be investigated to
+ensure it continues to work correctly. In particular, a second parameter may now be passed
+to this method in order to determine if page creation is allowed in any given context, whether
+it be at the root level, or as a child of a parent page.
+
+The creation of pages at the root level is now corrected to follow the rules specified 
+by the SiteConfig, which in turn has been updated to ensure only valid CMS users are
+granted this permission (when applicable).
+
+The creation of pages beneath parent pages will now inherit from the ability to edit
+this parent page.
+
+User code which is not updated, but relies on the old implementation of SiteTree::canCreate will
+now assume creation at the top level.
+
+For example see the below code as an example
+
+E.g.
+
+	:::php
+	<?php
+	class SingletonPage extends Page {
+		public function canCreate($member) {
+			if(static::get()->count()) return false;
+			
+			$context = func_num_args() > 1 ? func_get_arg(1) : array();
+			return parent::canCreate($member, $context);
+
+		}
+	}
+
+For more information on the reason for this change please see the security announcement below.
+
+## Security
+
+ * 2015-03-16 [64955e5](https://github.com/silverstripe/silverstripe-cms/commit/64955e5) Fix SiteTree / SiteConfig permissions (Damian Mooyman) - See announcement [ss-2015-008](http://www.silverstripe.org/software/download/security-releases/ss-2015-008-sitetree-creation-permission-vulnerability)
+
+### Bugfixes
+
+ * 2014-11-25 [b3407ab](https://github.com/silverstripe/sapphire/commit/b3407ab) Fix HTTPS proxy header detection (Same as #3152) (Stephen Shkardoon)
+ * 2015-01-08 [ac922a0](https://github.com/silverstripe/sapphire/commit/ac922a0) Fix tutorial index page for the new doc site (Cam Findlay)
+ * 2014-06-13 [0f74d8c](https://github.com/silverstripe/silverstripe-cms/commit/0f74d8c) Broken links in the 'Dependent pages' tab (Stig Lindqvist)
+ * 2014-01-31 [1661213](https://github.com/silverstripe/sapphire/commit/1661213) Opt-out pf form message escaping (fixes #2796) (Ingo Schommer)
+
+## Changelog
+
+ * [framework](https://github.com/silverstripe/silverstripe-framework/releases/tag/3.0.12)
+ * [cms](https://github.com/silverstripe/silverstripe-cms/releases/tag/3.0.12)
+ * [installer](https://github.com/silverstripe/silverstripe-installer/releases/tag/3.0.12)