Update dependencies, and set a more locked-down content security policy

composer.json

@@ -21,7 +21,7 @@
 		"aura/router": "^3.0",
 		"aura/session": "^2.0",
 		"aviat/banker": "^1.0.0",
-		"aviat/ion": "^2.0.0",
+		"aviat/ion": "^2.1.0",
 		"monolog/monolog": "^1.0",
 		"psr/http-message": "~1.0",
 		"psr/log": "~1.0",
@@ -37,7 +37,7 @@
 		"phploc/phploc": "^3.0",
 		"phpmd/phpmd": "^2.4",
 		"phpunit/phpunit": "^6.0",
-		"robmorgan/phinx": "~0.6.4",
+		"robmorgan/phinx": "^0.8.0",
 		"consolidation/robo": "~1.0",
 		"henrikbjorn/lurker": "^1.1.0",
 		"symfony/var-dumper": "^3.2",

src/Controller.php

@@ -239,6 +239,13 @@ class Controller {
 	 */
 	protected function renderFullPage($view, string $template, array $data)
 	{
+		$csp = [
+			"default-src 'self'",
+			"object-src 'none'",
+			"child-src 'none'",
+		];
+
+		$view->addHeader('Content-Security-Policy', implode('; ', $csp));
 		$view->appendOutput($this->loadPartial($view, 'header', $data));
 
 		if (array_key_exists('message', $data) && is_array($data['message']))