symfony
diff --git a/‎src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
Lines changed: 8 additions & 0 deletions b/‎src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
Lines changed: 8 additions & 0 deletions
diff --git a/‎src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/PhpFrameworkExtensionTest.php
Lines changed: 31 additions & 0 deletions b/‎src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/PhpFrameworkExtensionTest.php
Lines changed: 31 additions & 0 deletions
@@ -446,6 +446,10 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                         ->beforeNormalization()
                                             ->always()
                                             ->then(function ($places) {
+                                                if (!\is_array($places)) {
+                                                    throw new InvalidConfigurationException('The "places" option must be an array in workflow configuration.');
+                                                }
+
                                                 // It's an indexed array of shape  ['place1', 'place2']
                                                 if (isset($places[0]) && \is_string($places[0])) {
                                                     return array_map(function (string $place) {
@@ -491,6 +495,10 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                         ->beforeNormalization()
                                             ->always()
                                             ->then(function ($transitions) {
+                                                if (!\is_array($transitions)) {
+                                                    throw new InvalidConfigurationException('The "transitions" option must be an array in workflow configuration.');
+                                                }
+
                                                 // It's an indexed array, we let the validation occur
                                                 if (isset($transitions[0]) && \is_array($transitions[0])) {
                                                     return $transitions;
 
@@ -11,6 +11,7 @@
 
 namespace Symfony\Bundle\FrameworkBundle\Tests\DependencyInjection;
 
+use Symfony\Component\Config\Definition\Exception\InvalidConfigurationException;
 use Symfony\Component\Config\FileLocator;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Exception\LogicException;
@@ -56,6 +57,36 @@ public function testAssetPackageCannotHavePathAndUrl()
         });
     }
 
+    public function testWorkflowValidationPlacesIsArray()
+    {
+        $this->expectException(InvalidConfigurationException::class);
+        $this->expectExceptionMessage('The "places" option must be an array in workflow configuration.');
+        $this->createContainerFromClosure(function ($container) {
+            $container->loadFromExtension('framework', [
+                'workflows' => [
+                    'article' => [
+                        'places' => null,
+                    ],
+                ],
+            ]);
+        });
+    }
+
+    public function testWorkflowValidationTransitonsIsArray()
+    {
+        $this->expectException(InvalidConfigurationException::class);
+        $this->expectExceptionMessage('The "transitions" option must be an array in workflow configuration.');
+        $this->createContainerFromClosure(function ($container) {
+            $container->loadFromExtension('framework', [
+                'workflows' => [
+                    'article' => [
+                        'transitions' => null,
+                    ],
+                ],
+            ]);
+        });
+    }
+
     public function testWorkflowValidationStateMachine()
     {
         $this->expectException(InvalidDefinitionException::class);