diff --git a/src/Symfony/Component/Serializer/CHANGELOG.md b/src/Symfony/Component/Serializer/CHANGELOG.md
index 983bb9f5a0654..6cd80fdb0b8cc 100644
--- a/src/Symfony/Component/Serializer/CHANGELOG.md
+++ b/src/Symfony/Component/Serializer/CHANGELOG.md
@@ -1,6 +1,11 @@
 CHANGELOG
 =========
 
+4.2.0
+-----
+
+* `AbstractNormalizer::handleCircularReference` is now final, and receives two optional extra arguments: the format and the context
+
 4.1.0
 -----
 
diff --git a/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
index fe8b05ef860c2..f8344cca5262b 100644
--- a/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
@@ -190,16 +190,23 @@ protected function isCircularReference($object, &$context)
      * If a circular reference handler is set, it will be called. Otherwise, a
      * {@class CircularReferenceException} will be thrown.
      *
-     * @param object $object
+     * @final since Symfony 4.2
+     *
+     * @param object      $object
+     * @param string|null $format
+     * @param array       $context
      *
      * @return mixed
      *
      * @throws CircularReferenceException
      */
-    protected function handleCircularReference($object)
+    protected function handleCircularReference($object/*, string $format = null, array $context = array()*/)
     {
+        $format = \func_num_args() > 1 ? func_get_arg(1) : null;
+        $context = \func_num_args() > 2 ? func_get_arg(2) : array();
+
         if ($this->circularReferenceHandler) {
-            return \call_user_func($this->circularReferenceHandler, $object);
+            return \call_user_func($this->circularReferenceHandler, $object, $format, $context);
         }
 
         throw new CircularReferenceException(sprintf('A circular reference has been detected when serializing the object of class "%s" (configured limit: %d)', \get_class($object), $this->circularReferenceLimit));
diff --git a/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
index 7f8d341846f7d..f901712350234 100644
--- a/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
@@ -79,13 +79,13 @@ public function normalize($object, $format = null, array $context = array())
         }
 
         if ($this->isCircularReference($object, $context)) {
-            return $this->handleCircularReference($object);
+            return $this->handleCircularReference($object, $format, $context);
         }
 
         $data = array();
         $stack = array();
         $attributes = $this->getAttributes($object, $format, $context);
-        $class = get_class($object);
+        $class = \get_class($object);
         $attributesMetadata = $this->classMetadataFactory ? $this->classMetadataFactory->getMetadataFor($class)->getAttributesMetadata() : null;
 
         foreach ($attributes as $attribute) {
@@ -154,7 +154,7 @@ protected function instantiateObject(array &$data, $class, array &$context, \Ref
      */
     protected function getAttributes($object, $format = null, array $context)
     {
-        $class = get_class($object);
+        $class = \get_class($object);
         $key = $class.'-'.$context['cache_key'];
 
         if (isset($this->attributesCache[$key])) {
@@ -248,7 +248,7 @@ public function denormalize($data, $class, $format = null, array $context = arra
                 $attribute = $this->nameConverter->denormalize($attribute);
             }
 
-            if ((false !== $allowedAttributes && !in_array($attribute, $allowedAttributes)) || !$this->isAllowedAttribute($class, $attribute, $format, $context)) {
+            if ((false !== $allowedAttributes && !\in_array($attribute, $allowedAttributes)) || !$this->isAllowedAttribute($class, $attribute, $format, $context)) {
                 if (isset($context[self::ALLOW_EXTRA_ATTRIBUTES]) && !$context[self::ALLOW_EXTRA_ATTRIBUTES]) {
                     $extraAttributes[] = $attribute;
                 }
@@ -345,7 +345,7 @@ private function validateAndDenormalize(string $currentClass, string $attribute,
                 return (float) $data;
             }
 
-            if (call_user_func('is_'.$builtinType, $data)) {
+            if (\call_user_func('is_'.$builtinType, $data)) {
                 return $data;
             }
         }
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php
index 62338af339f41..76193925435e2 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php
@@ -544,6 +544,15 @@ public function testCircularReferenceHandler()
 
         $expected = array('me' => 'Symfony\Component\Serializer\Tests\Fixtures\CircularReferenceDummy');
         $this->assertEquals($expected, $this->normalizer->normalize($obj));
+
+        $this->normalizer->setCircularReferenceHandler(function ($obj, string $format, array $context) {
+            $this->assertInstanceOf(CircularReferenceDummy::class, $obj);
+            $this->assertSame('test', $format);
+            $this->arrayHasKey('foo', $context);
+
+            return \get_class($obj);
+        });
+        $this->assertEquals($expected, $this->normalizer->normalize($obj, 'test', array('foo' => 'bar')));
     }
 
     public function testDenormalizeNonExistingAttribute()