diff --git a/src/Symfony/Bridge/Twig/DataCollector/TwigDataCollector.php b/src/Symfony/Bridge/Twig/DataCollector/TwigDataCollector.php
index 90b21d0495ff..f075709654c9 100644
--- a/src/Symfony/Bridge/Twig/DataCollector/TwigDataCollector.php
+++ b/src/Symfony/Bridge/Twig/DataCollector/TwigDataCollector.php
@@ -93,7 +93,11 @@ public function getHtmlCallGraph()
     public function getProfile()
     {
         if (null === $this->profile) {
-            $this->profile = unserialize($this->data['profile']);
+            if (PHP_VERSION_ID >= 70000) {
+                $this->profile = unserialize($this->data['profile'], array('allowed_classes' => array('Twig_Profiler_Profile')));
+            } else {
+                $this->profile = unserialize($this->data['profile']);
+            }
         }
 
         return $this->profile;
diff --git a/src/Symfony/Component/DependencyInjection/Config/AutowireServiceResource.php b/src/Symfony/Component/DependencyInjection/Config/AutowireServiceResource.php
index 36449d8d3042..a1549eeb977f 100644
--- a/src/Symfony/Component/DependencyInjection/Config/AutowireServiceResource.php
+++ b/src/Symfony/Component/DependencyInjection/Config/AutowireServiceResource.php
@@ -60,7 +60,11 @@ public function serialize()
 
     public function unserialize($serialized)
     {
-        list($this->class, $this->filePath, $this->autowiringMetadata) = unserialize($serialized);
+        if (PHP_VERSION_ID >= 70000) {
+            list($this->class, $this->filePath, $this->autowiringMetadata) = unserialize($serialized, array('allowed_classes' => false));
+        } else {
+            list($this->class, $this->filePath, $this->autowiringMetadata) = unserialize($serialized);
+        }
     }
 
     /**
diff --git a/src/Symfony/Component/Form/FormError.php b/src/Symfony/Component/Form/FormError.php
index 6b3938868ddd..e4e50a873c94 100644
--- a/src/Symfony/Component/Form/FormError.php
+++ b/src/Symfony/Component/Form/FormError.php
@@ -185,6 +185,10 @@ public function serialize()
      */
     public function unserialize($serialized)
     {
-        list($this->message, $this->messageTemplate, $this->messageParameters, $this->messagePluralization, $this->cause) = unserialize($serialized);
+        if (PHP_VERSION_ID >= 70000) {
+            list($this->message, $this->messageTemplate, $this->messageParameters, $this->messagePluralization, $this->cause) = unserialize($serialized, array('allowed_classes' => false));
+        } else {
+            list($this->message, $this->messageTemplate, $this->messageParameters, $this->messagePluralization, $this->cause) = unserialize($serialized);
+        }
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/Config/EnvParametersResource.php b/src/Symfony/Component/HttpKernel/Config/EnvParametersResource.php
index bad199be94be..fd53f0bcef3b 100644
--- a/src/Symfony/Component/HttpKernel/Config/EnvParametersResource.php
+++ b/src/Symfony/Component/HttpKernel/Config/EnvParametersResource.php
@@ -72,7 +72,11 @@ public function serialize()
 
     public function unserialize($serialized)
     {
-        $unserialized = unserialize($serialized);
+        if (PHP_VERSION_ID >= 70000) {
+            $unserialized = unserialize($serialized, array('allowed_classes' => false));
+        } else {
+            $unserialized = unserialize($serialized);
+        }
 
         $this->prefix = $unserialized['prefix'];
         $this->variables = $unserialized['variables'];
diff --git a/src/Symfony/Component/HttpKernel/Debug/FileLinkFormatter.php b/src/Symfony/Component/HttpKernel/Debug/FileLinkFormatter.php
index 03e3cf89549b..9eefba210a41 100644
--- a/src/Symfony/Component/HttpKernel/Debug/FileLinkFormatter.php
+++ b/src/Symfony/Component/HttpKernel/Debug/FileLinkFormatter.php
@@ -63,7 +63,11 @@ public function serialize()
 
     public function unserialize($serialized)
     {
-        $this->fileLinkFormat = unserialize($serialized);
+        if (PHP_VERSION_ID >= 70000) {
+            $this->fileLinkFormat = unserialize($serialized, array('allowed_classes' => false));
+        } else {
+            $this->fileLinkFormat = unserialize($serialized);
+        }
     }
 
     private function getFileLinkFormat()
diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index b7b7d81b6198..75b09a144e21 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -734,7 +734,11 @@ public function serialize()
 
     public function unserialize($data)
     {
-        list($environment, $debug) = unserialize($data);
+        if (PHP_VERSION_ID >= 70000) {
+            list($environment, $debug) = unserialize($data, array('allowed_classes' => false));
+        } else {
+            list($environment, $debug) = unserialize($data);
+        }
 
         $this->__construct($environment, $debug);
     }
diff --git a/src/Symfony/Component/Routing/CompiledRoute.php b/src/Symfony/Component/Routing/CompiledRoute.php
index 3eca9ecd8b01..a3cbdd056f37 100644
--- a/src/Symfony/Component/Routing/CompiledRoute.php
+++ b/src/Symfony/Component/Routing/CompiledRoute.php
@@ -73,7 +73,12 @@ public function serialize()
      */
     public function unserialize($serialized)
     {
-        $data = unserialize($serialized);
+        if (PHP_VERSION_ID >= 70000) {
+            $data = unserialize($serialized, array('allowed_classes' => false));
+        } else {
+            $data = unserialize($serialized);
+        }
+
         $this->variables = $data['vars'];
         $this->staticPrefix = $data['path_prefix'];
         $this->regex = $data['path_regex'];
diff --git a/src/Symfony/Component/Routing/Route.php b/src/Symfony/Component/Routing/Route.php
index ee3b5a5909bc..ef4bc0fab1d4 100644
--- a/src/Symfony/Component/Routing/Route.php
+++ b/src/Symfony/Component/Routing/Route.php
@@ -116,7 +116,11 @@ public function serialize()
      */
     public function unserialize($serialized)
     {
-        $data = unserialize($serialized);
+        if (PHP_VERSION_ID >= 70000) {
+            $data = unserialize($serialized, array('allowed_classes' => array(CompiledRoute::class)));
+        } else {
+            $data = unserialize($serialized);
+        }
         $this->path = $data['path'];
         $this->host = $data['host'];
         $this->defaults = $data['defaults'];