Index: /CKEditor/trunk/CHANGES.html
===================================================================
--- /CKEditor/trunk/CHANGES.html	(revision 7291)
+++ /CKEditor/trunk/CHANGES.html	(revision 7292)
@@ -45,5 +45,5 @@
 			Fixed issues:</p>
 	<ul>
-		<li></li>
+		<li><a href="http://dev.ckeditor.com/ticket/8333">#8333</a> : Allow to close the dialogs with Esc key even if there's no Cancel button.</li>
 	</ul>
 	<h3>
Index: /CKEditor/trunk/_source/plugins/dialog/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/dialog/plugin.js	(revision 7291)
+++ /CKEditor/trunk/_source/plugins/dialog/plugin.js	(revision 7292)
@@ -820,5 +820,13 @@
 			registerAccessKey( this, this, '\x1b', null, function()
 					{
-						this.getButton( 'cancel' ) && this.getButton( 'cancel' ).click();
+						var button = this.getButton( 'cancel' );
+						// If there's a Cancel button, click it, else just fire the cancel event and hide the dialog
+						if ( button )
+							button.click();
+						else
+						{
+							if ( this.fire( 'cancel', { hide : true } ).hide !== false )
+								this.hide();
+						}
 					} );