diff --git a/core/authorize.php b/core/authorize.php
index e0b7c4f192..9ffe8e2b7d 100644
--- a/core/authorize.php
+++ b/core/authorize.php
@@ -27,7 +27,7 @@
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Drupal\Core\Site\Settings;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\Routing\Route;
 
 // Change the directory to the Drupal root.
diff --git a/core/includes/install.core.inc b/core/includes/install.core.inc
index a155778e83..d6855fcf35 100644
--- a/core/includes/install.core.inc
+++ b/core/includes/install.core.inc
@@ -31,7 +31,7 @@
 use Drupal\Core\DependencyInjection\ContainerBuilder;
 use Drupal\Core\Url;
 use Drupal\language\Entity\ConfigurableLanguage;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\DependencyInjection\Reference;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
diff --git a/core/lib/Drupal/Core/Access/AccessManager.php b/core/lib/Drupal/Core/Access/AccessManager.php
index d2b7e55f99..36dec5b65c 100644
--- a/core/lib/Drupal/Core/Access/AccessManager.php
+++ b/core/lib/Drupal/Core/Access/AccessManager.php
@@ -11,7 +11,7 @@
 use Drupal\Component\Utility\ArgumentsResolverInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Exception\RouteNotFoundException;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 
 /**
  * Attaches access check services to routes and runs them on request.
diff --git a/core/lib/Drupal/Core/Entity/Enhancer/EntityRouteEnhancer.php b/core/lib/Drupal/Core/Entity/Enhancer/EntityRouteEnhancer.php
index f383fbc986..aa0b41a2fa 100644
--- a/core/lib/Drupal/Core/Entity/Enhancer/EntityRouteEnhancer.php
+++ b/core/lib/Drupal/Core/Entity/Enhancer/EntityRouteEnhancer.php
@@ -4,7 +4,7 @@
 
 use Drupal\Core\Routing\EnhancerInterface;
 use Symfony\Component\HttpFoundation\Request;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\Routing\Route;
 
 /**
diff --git a/core/lib/Drupal/Core/EventSubscriber/SpecialAttributesRouteSubscriber.php b/core/lib/Drupal/Core/EventSubscriber/SpecialAttributesRouteSubscriber.php
index 0f40c5a58e..67b2fba2b6 100644
--- a/core/lib/Drupal/Core/EventSubscriber/SpecialAttributesRouteSubscriber.php
+++ b/core/lib/Drupal/Core/EventSubscriber/SpecialAttributesRouteSubscriber.php
@@ -4,7 +4,7 @@
 
 use Drupal\Core\Routing\RouteBuildEvent;
 use Drupal\Core\Routing\RouteSubscriberBase;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\Routing\RouteCollection;
 
 /**
diff --git a/core/lib/Drupal/Core/ParamConverter/ParamConverterManager.php b/core/lib/Drupal/Core/ParamConverter/ParamConverterManager.php
index 944bd5304c..c3ca6ba879 100644
--- a/core/lib/Drupal/Core/ParamConverter/ParamConverterManager.php
+++ b/core/lib/Drupal/Core/ParamConverter/ParamConverterManager.php
@@ -2,7 +2,7 @@
 
 namespace Drupal\Core\ParamConverter;
 
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\Routing\RouteCollection;
 
 /**
diff --git a/core/lib/Drupal/Core/Path/PathValidator.php b/core/lib/Drupal/Core/Path/PathValidator.php
index efce47305a..58976df177 100644
--- a/core/lib/Drupal/Core/Path/PathValidator.php
+++ b/core/lib/Drupal/Core/Path/PathValidator.php
@@ -9,7 +9,7 @@
 use Drupal\Core\Routing\RequestContext;
 use Drupal\Core\Session\AccountInterface;
 use Drupal\Core\Url;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
 use Symfony\Component\Routing\Exception\MethodNotAllowedException;
diff --git a/core/lib/Drupal/Core/Routing/Enhancer/EntityRevisionRouteEnhancer.php b/core/lib/Drupal/Core/Routing/Enhancer/EntityRevisionRouteEnhancer.php
index d54338f449..bdd52cbdd3 100644
--- a/core/lib/Drupal/Core/Routing/Enhancer/EntityRevisionRouteEnhancer.php
+++ b/core/lib/Drupal/Core/Routing/Enhancer/EntityRevisionRouteEnhancer.php
@@ -3,7 +3,7 @@
 namespace Drupal\Core\Routing\Enhancer;
 
 use Drupal\Core\Routing\EnhancerInterface;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
 
diff --git a/core/lib/Drupal/Core/Routing/Enhancer/FormRouteEnhancer.php b/core/lib/Drupal/Core/Routing/Enhancer/FormRouteEnhancer.php
index c812178d29..9e9df9f71d 100644
--- a/core/lib/Drupal/Core/Routing/Enhancer/FormRouteEnhancer.php
+++ b/core/lib/Drupal/Core/Routing/Enhancer/FormRouteEnhancer.php
@@ -3,7 +3,7 @@
 namespace Drupal\Core\Routing\Enhancer;
 
 use Drupal\Core\Routing\EnhancerInterface;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
 
diff --git a/core/lib/Drupal/Core/Routing/Enhancer/ParamConversionEnhancer.php b/core/lib/Drupal/Core/Routing/Enhancer/ParamConversionEnhancer.php
index 332b905b53..b9bbb51ac7 100644
--- a/core/lib/Drupal/Core/Routing/Enhancer/ParamConversionEnhancer.php
+++ b/core/lib/Drupal/Core/Routing/Enhancer/ParamConversionEnhancer.php
@@ -5,7 +5,7 @@
 use Drupal\Core\ParamConverter\ParamConverterManagerInterface;
 use Drupal\Core\ParamConverter\ParamNotConvertedException;
 use Drupal\Core\Routing\EnhancerInterface;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 use Symfony\Component\HttpFoundation\ParameterBag;
 use Symfony\Component\HttpFoundation\Request;
diff --git a/core/lib/Drupal/Core/Routing/RouteMatch.php b/core/lib/Drupal/Core/Routing/RouteMatch.php
index 10c444758f..8b6b57c301 100644
--- a/core/lib/Drupal/Core/Routing/RouteMatch.php
+++ b/core/lib/Drupal/Core/Routing/RouteMatch.php
@@ -2,7 +2,7 @@
 
 namespace Drupal\Core\Routing;
 
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\ParameterBag;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
diff --git a/core/lib/Drupal/Core/Routing/RouteObjectInterface.php b/core/lib/Drupal/Core/Routing/RouteObjectInterface.php
new file mode 100644
index 0000000000..7c18c4b7d6
--- /dev/null
+++ b/core/lib/Drupal/Core/Routing/RouteObjectInterface.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace Drupal\Core\Routing;
+
+/**
+ * Provides constants used for retrieving matched routes.
+ */
+interface RouteObjectInterface {
+
+  /**
+   * Key for the route name.
+   *
+   * @var string
+   */
+  const ROUTE_NAME = '_route';
+
+  /**
+   * Key for the route object.
+   *
+   * @var string
+   */
+  const ROUTE_OBJECT = '_route_object';
+
+}
diff --git a/core/lib/Drupal/Core/Test/FunctionalTestSetupTrait.php b/core/lib/Drupal/Core/Test/FunctionalTestSetupTrait.php
index a10af1e48c..5047975076 100644
--- a/core/lib/Drupal/Core/Test/FunctionalTestSetupTrait.php
+++ b/core/lib/Drupal/Core/Test/FunctionalTestSetupTrait.php
@@ -21,7 +21,7 @@
 use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Yaml\Yaml as SymfonyYaml;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\Routing\Route;
 
 /**
diff --git a/core/lib/Drupal/Core/Update/UpdateKernel.php b/core/lib/Drupal/Core/Update/UpdateKernel.php
index 5aae2bce19..af679fc083 100644
--- a/core/lib/Drupal/Core/Update/UpdateKernel.php
+++ b/core/lib/Drupal/Core/Update/UpdateKernel.php
@@ -6,7 +6,7 @@
 use Drupal\Core\Session\AnonymousUserSession;
 use Drupal\Core\Site\Settings;
 use Drupal\Core\StackMiddleware\ReverseProxyMiddleware;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\HttpFoundation\ParameterBag;
 use Symfony\Component\HttpFoundation\Request;
diff --git a/core/lib/Drupal/Core/Url.php b/core/lib/Drupal/Core/Url.php
index ea552bf4cb..72aeb07e9e 100644
--- a/core/lib/Drupal/Core/Url.php
+++ b/core/lib/Drupal/Core/Url.php
@@ -10,7 +10,7 @@
 use Drupal\Core\Routing\UrlGeneratorInterface;
 use Drupal\Core\Session\AccountInterface;
 use Drupal\Core\Utility\UnroutedUrlAssemblerInterface;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\Request;
 
 /**
diff --git a/core/modules/field_ui/src/Routing/FieldUiRouteEnhancer.php b/core/modules/field_ui/src/Routing/FieldUiRouteEnhancer.php
index c7e51950e8..dac2ca0d47 100644
--- a/core/modules/field_ui/src/Routing/FieldUiRouteEnhancer.php
+++ b/core/modules/field_ui/src/Routing/FieldUiRouteEnhancer.php
@@ -3,7 +3,7 @@
 namespace Drupal\field_ui\Routing;
 
 use Drupal\Core\Routing\EnhancerInterface;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Drupal\Core\Entity\EntityTypeManagerInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
diff --git a/core/modules/jsonapi/src/ParamConverter/EntityUuidConverter.php b/core/modules/jsonapi/src/ParamConverter/EntityUuidConverter.php
index abc10cff4f..1b4ef83e43 100644
--- a/core/modules/jsonapi/src/ParamConverter/EntityUuidConverter.php
+++ b/core/modules/jsonapi/src/ParamConverter/EntityUuidConverter.php
@@ -7,7 +7,7 @@
 use Drupal\Core\Language\LanguageManagerInterface;
 use Drupal\Core\ParamConverter\EntityConverter;
 use Drupal\jsonapi\Routing\Routes;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpKernel\Exception\MethodNotAllowedHttpException;
 use Symfony\Component\Routing\Route;
 
diff --git a/core/modules/jsonapi/src/Revisions/ResourceVersionRouteEnhancer.php b/core/modules/jsonapi/src/Revisions/ResourceVersionRouteEnhancer.php
index 50cb8b8c5d..8da175894c 100644
--- a/core/modules/jsonapi/src/Revisions/ResourceVersionRouteEnhancer.php
+++ b/core/modules/jsonapi/src/Revisions/ResourceVersionRouteEnhancer.php
@@ -8,7 +8,7 @@
 use Drupal\Core\Http\Exception\CacheableHttpException;
 use Drupal\Core\Routing\EnhancerInterface;
 use Drupal\jsonapi\Routing\Routes;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpKernel\Exception\BadRequestHttpException;
 
diff --git a/core/modules/jsonapi/src/Routing/Routes.php b/core/modules/jsonapi/src/Routing/Routes.php
index e592f007ae..7ba8338112 100644
--- a/core/modules/jsonapi/src/Routing/Routes.php
+++ b/core/modules/jsonapi/src/Routing/Routes.php
@@ -8,7 +8,7 @@
 use Drupal\jsonapi\ParamConverter\ResourceTypeConverter;
 use Drupal\jsonapi\ResourceType\ResourceType;
 use Drupal\jsonapi\ResourceType\ResourceTypeRepositoryInterface;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\Routing\Route;
 use Symfony\Component\Routing\RouteCollection;
diff --git a/core/modules/jsonapi/tests/src/Unit/EventSubscriber/ResourceResponseValidatorTest.php b/core/modules/jsonapi/tests/src/Unit/EventSubscriber/ResourceResponseValidatorTest.php
index 1746400ef3..0b8fb514b7 100644
--- a/core/modules/jsonapi/tests/src/Unit/EventSubscriber/ResourceResponseValidatorTest.php
+++ b/core/modules/jsonapi/tests/src/Unit/EventSubscriber/ResourceResponseValidatorTest.php
@@ -12,7 +12,7 @@
 use Drupal\Tests\UnitTestCase;
 use Prophecy\Argument;
 use Psr\Log\LoggerInterface;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\Request;
 
 /**
diff --git a/core/modules/jsonapi/tests/src/Unit/Routing/RoutesTest.php b/core/modules/jsonapi/tests/src/Unit/Routing/RoutesTest.php
index 5ec52a6a92..6f7676b287 100644
--- a/core/modules/jsonapi/tests/src/Unit/Routing/RoutesTest.php
+++ b/core/modules/jsonapi/tests/src/Unit/Routing/RoutesTest.php
@@ -8,7 +8,7 @@
 use Drupal\jsonapi\ResourceType\ResourceTypeRepository;
 use Drupal\jsonapi\Routing\Routes;
 use Drupal\Tests\UnitTestCase;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 
 /**
diff --git a/core/modules/language/src/Plugin/LanguageNegotiation/LanguageNegotiationContentEntity.php b/core/modules/language/src/Plugin/LanguageNegotiation/LanguageNegotiationContentEntity.php
index cff1fa238f..466df9378a 100644
--- a/core/modules/language/src/Plugin/LanguageNegotiation/LanguageNegotiationContentEntity.php
+++ b/core/modules/language/src/Plugin/LanguageNegotiation/LanguageNegotiationContentEntity.php
@@ -10,7 +10,7 @@
 use Drupal\Core\Url;
 use Drupal\language\LanguageNegotiationMethodBase;
 use Drupal\language\LanguageSwitcherInterface;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
diff --git a/core/modules/language/tests/src/Functional/LanguageNegotiationContentEntityTest.php b/core/modules/language/tests/src/Functional/LanguageNegotiationContentEntityTest.php
index 66ea59ac1e..47b07dc55c 100644
--- a/core/modules/language/tests/src/Functional/LanguageNegotiationContentEntityTest.php
+++ b/core/modules/language/tests/src/Functional/LanguageNegotiationContentEntityTest.php
@@ -9,7 +9,7 @@
 use Drupal\language\Plugin\LanguageNegotiation\LanguageNegotiationContentEntity;
 use Drupal\language\Plugin\LanguageNegotiation\LanguageNegotiationUrl;
 use Drupal\Tests\BrowserTestBase;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
 
diff --git a/core/modules/language/tests/src/Kernel/EntityUrlLanguageTest.php b/core/modules/language/tests/src/Kernel/EntityUrlLanguageTest.php
index 802d1a2431..994274e9d0 100644
--- a/core/modules/language/tests/src/Kernel/EntityUrlLanguageTest.php
+++ b/core/modules/language/tests/src/Kernel/EntityUrlLanguageTest.php
@@ -7,7 +7,7 @@
 use Drupal\language\Entity\ConfigurableLanguage;
 use Drupal\language\Plugin\LanguageNegotiation\LanguageNegotiationContentEntity;
 use Drupal\language\Plugin\LanguageNegotiation\LanguageNegotiationUrl;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
 
diff --git a/core/modules/menu_link_content/tests/src/Kernel/MenuLinkContentCacheabilityBubblingTest.php b/core/modules/menu_link_content/tests/src/Kernel/MenuLinkContentCacheabilityBubblingTest.php
index c783d852df..3675d1f291 100644
--- a/core/modules/menu_link_content/tests/src/Kernel/MenuLinkContentCacheabilityBubblingTest.php
+++ b/core/modules/menu_link_content/tests/src/Kernel/MenuLinkContentCacheabilityBubblingTest.php
@@ -10,7 +10,7 @@
 use Drupal\menu_link_content\Entity\MenuLinkContent;
 use Drupal\Tests\user\Traits\UserCreationTrait;
 use Drupal\user\Entity\User;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
 
diff --git a/core/modules/system/tests/modules/router_test_directory/src/TestControllers.php b/core/modules/system/tests/modules/router_test_directory/src/TestControllers.php
index fe228a336b..e8e0604e3a 100644
--- a/core/modules/system/tests/modules/router_test_directory/src/TestControllers.php
+++ b/core/modules/system/tests/modules/router_test_directory/src/TestControllers.php
@@ -5,7 +5,7 @@
 use Drupal\Core\Cache\CacheableResponse;
 use Drupal\Core\ParamConverter\ParamNotConvertedException;
 use Drupal\user\UserInterface;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Laminas\Diactoros\Response\HtmlResponse;
diff --git a/core/modules/system/tests/src/Functional/Theme/ThemeTest.php b/core/modules/system/tests/src/Functional/Theme/ThemeTest.php
index 8058a752d2..5028649cc3 100644
--- a/core/modules/system/tests/src/Functional/Theme/ThemeTest.php
+++ b/core/modules/system/tests/src/Functional/Theme/ThemeTest.php
@@ -4,7 +4,7 @@
 
 use Drupal\Component\Serialization\Json;
 use Drupal\Tests\BrowserTestBase;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
 
diff --git a/core/modules/system/tests/src/Kernel/Block/SystemMenuBlockTest.php b/core/modules/system/tests/src/Kernel/Block/SystemMenuBlockTest.php
index 35dfa12a4f..416e347526 100644
--- a/core/modules/system/tests/src/Kernel/Block/SystemMenuBlockTest.php
+++ b/core/modules/system/tests/src/Kernel/Block/SystemMenuBlockTest.php
@@ -10,7 +10,7 @@
 use Drupal\system\Tests\Routing\MockRouteProvider;
 use Drupal\Tests\Core\Menu\MenuLinkMock;
 use Drupal\user\Entity\User;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
 use Symfony\Component\Routing\RouteCollection;
diff --git a/core/modules/system/tests/src/Unit/Breadcrumbs/PathBasedBreadcrumbBuilderTest.php b/core/modules/system/tests/src/Unit/Breadcrumbs/PathBasedBreadcrumbBuilderTest.php
index 61ca3e0a8d..d1367fa375 100644
--- a/core/modules/system/tests/src/Unit/Breadcrumbs/PathBasedBreadcrumbBuilderTest.php
+++ b/core/modules/system/tests/src/Unit/Breadcrumbs/PathBasedBreadcrumbBuilderTest.php
@@ -17,7 +17,7 @@
 use Drupal\Core\Utility\LinkGeneratorInterface;
 use Drupal\system\PathBasedBreadcrumbBuilder;
 use Drupal\Tests\UnitTestCase;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\DependencyInjection\Container;
 use Symfony\Component\HttpFoundation\ParameterBag;
 use Symfony\Component\HttpFoundation\Request;
diff --git a/core/modules/user/src/Plugin/LanguageNegotiation/LanguageNegotiationUserAdmin.php b/core/modules/user/src/Plugin/LanguageNegotiation/LanguageNegotiationUserAdmin.php
index 4a829906ae..fec14c3262 100644
--- a/core/modules/user/src/Plugin/LanguageNegotiation/LanguageNegotiationUserAdmin.php
+++ b/core/modules/user/src/Plugin/LanguageNegotiation/LanguageNegotiationUserAdmin.php
@@ -7,7 +7,7 @@
 use Drupal\Core\Routing\AdminContext;
 use Drupal\Core\Routing\StackedRouteMatchInterface;
 use Drupal\language\LanguageNegotiationMethodBase;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
diff --git a/core/modules/views/tests/src/Unit/Routing/ViewPageControllerTest.php b/core/modules/views/tests/src/Unit/Routing/ViewPageControllerTest.php
index 0364558124..ea19de25e4 100644
--- a/core/modules/views/tests/src/Unit/Routing/ViewPageControllerTest.php
+++ b/core/modules/views/tests/src/Unit/Routing/ViewPageControllerTest.php
@@ -5,7 +5,7 @@
 use Drupal\Core\Routing\RouteMatch;
 use Drupal\Tests\UnitTestCase;
 use Drupal\views\Routing\ViewPageController;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\ParameterBag;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
diff --git a/core/modules/views_ui/src/ViewUI.php b/core/modules/views_ui/src/ViewUI.php
index b5a1e11c50..d7e5523912 100644
--- a/core/modules/views_ui/src/ViewUI.php
+++ b/core/modules/views_ui/src/ViewUI.php
@@ -16,7 +16,7 @@
 use Drupal\views\Plugin\views\query\Sql;
 use Drupal\views\Entity\View;
 use Drupal\views\ViewEntityInterface;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\ParameterBag;
 use Symfony\Component\HttpFoundation\Request;
 
diff --git a/core/tests/Drupal/KernelTests/Core/RouteProcessor/RouteNoneTest.php b/core/tests/Drupal/KernelTests/Core/RouteProcessor/RouteNoneTest.php
index 6d26891fdb..2e0b3fbaf3 100644
--- a/core/tests/Drupal/KernelTests/Core/RouteProcessor/RouteNoneTest.php
+++ b/core/tests/Drupal/KernelTests/Core/RouteProcessor/RouteNoneTest.php
@@ -6,7 +6,7 @@
 use Drupal\Core\GeneratedUrl;
 use Drupal\Core\Render\BubbleableMetadata;
 use Drupal\KernelTests\KernelTestBase;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
 
diff --git a/core/tests/Drupal/KernelTests/Core/RouteProcessor/RouteProcessorCurrentIntegrationTest.php b/core/tests/Drupal/KernelTests/Core/RouteProcessor/RouteProcessorCurrentIntegrationTest.php
index 4e42271aa5..87c67f270b 100644
--- a/core/tests/Drupal/KernelTests/Core/RouteProcessor/RouteProcessorCurrentIntegrationTest.php
+++ b/core/tests/Drupal/KernelTests/Core/RouteProcessor/RouteProcessorCurrentIntegrationTest.php
@@ -6,7 +6,7 @@
 use Drupal\Core\GeneratedUrl;
 use Drupal\Core\Render\BubbleableMetadata;
 use Drupal\KernelTests\KernelTestBase;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
 
diff --git a/core/tests/Drupal/KernelTests/KernelTestBase.php b/core/tests/Drupal/KernelTests/KernelTestBase.php
index ebb50d631d..4a876e56f0 100644
--- a/core/tests/Drupal/KernelTests/KernelTestBase.php
+++ b/core/tests/Drupal/KernelTests/KernelTestBase.php
@@ -29,7 +29,7 @@
 use Symfony\Component\HttpFoundation\Request;
 use org\bovigo\vfs\vfsStream;
 use org\bovigo\vfs\visitor\vfsStreamPrintVisitor;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\Routing\Route;
 
 /**
diff --git a/core/tests/Drupal/Tests/Core/Access/AccessManagerTest.php b/core/tests/Drupal/Tests/Core/Access/AccessManagerTest.php
index d958ca0cf4..cf8749b745 100644
--- a/core/tests/Drupal/Tests/Core/Access/AccessManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/Access/AccessManagerTest.php
@@ -17,7 +17,7 @@
 use Drupal\Core\Access\DefaultAccessCheck;
 use Drupal\Tests\UnitTestCase;
 use Drupal\router_test\Access\DefinedTestAccessCheck;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\Routing\Exception\RouteNotFoundException;
 use Symfony\Component\Routing\Route;
diff --git a/core/tests/Drupal/Tests/Core/Authentication/AuthenticationManagerTest.php b/core/tests/Drupal/Tests/Core/Authentication/AuthenticationManagerTest.php
index 8269796781..d580d8204e 100644
--- a/core/tests/Drupal/Tests/Core/Authentication/AuthenticationManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/Authentication/AuthenticationManagerTest.php
@@ -12,7 +12,7 @@
 use Drupal\Core\Authentication\AuthenticationProviderFilterInterface;
 use Drupal\Core\Authentication\AuthenticationProviderInterface;
 use Drupal\Tests\UnitTestCase;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
 
diff --git a/core/tests/Drupal/Tests/Core/Enhancer/EntityRevisionRouteEnhancerTest.php b/core/tests/Drupal/Tests/Core/Enhancer/EntityRevisionRouteEnhancerTest.php
index 4d1883a447..99c0b29c36 100644
--- a/core/tests/Drupal/Tests/Core/Enhancer/EntityRevisionRouteEnhancerTest.php
+++ b/core/tests/Drupal/Tests/Core/Enhancer/EntityRevisionRouteEnhancerTest.php
@@ -5,7 +5,7 @@
 use Drupal\Core\Entity\EntityInterface;
 use Drupal\Core\Routing\Enhancer\EntityRevisionRouteEnhancer;
 use Drupal\Tests\UnitTestCase;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
 
diff --git a/core/tests/Drupal/Tests/Core/Enhancer/ParamConversionEnhancerTest.php b/core/tests/Drupal/Tests/Core/Enhancer/ParamConversionEnhancerTest.php
index fa534890b1..97b5c54e50 100644
--- a/core/tests/Drupal/Tests/Core/Enhancer/ParamConversionEnhancerTest.php
+++ b/core/tests/Drupal/Tests/Core/Enhancer/ParamConversionEnhancerTest.php
@@ -4,7 +4,7 @@
 
 use Drupal\Core\Routing\Enhancer\ParamConversionEnhancer;
 use Drupal\Tests\UnitTestCase;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\ParameterBag;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
diff --git a/core/tests/Drupal/Tests/Core/Entity/Enhancer/EntityRouteEnhancerTest.php b/core/tests/Drupal/Tests/Core/Entity/Enhancer/EntityRouteEnhancerTest.php
index 5ea28c9d86..d063e147e5 100644
--- a/core/tests/Drupal/Tests/Core/Entity/Enhancer/EntityRouteEnhancerTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/Enhancer/EntityRouteEnhancerTest.php
@@ -4,7 +4,7 @@
 
 use Drupal\Core\Entity\Enhancer\EntityRouteEnhancer;
 use Drupal\Tests\UnitTestCase;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
 
diff --git a/core/tests/Drupal/Tests/Core/EventSubscriber/SpecialAttributesRouteSubscriberTest.php b/core/tests/Drupal/Tests/Core/EventSubscriber/SpecialAttributesRouteSubscriberTest.php
index 0aa466bddc..16b18a7663 100644
--- a/core/tests/Drupal/Tests/Core/EventSubscriber/SpecialAttributesRouteSubscriberTest.php
+++ b/core/tests/Drupal/Tests/Core/EventSubscriber/SpecialAttributesRouteSubscriberTest.php
@@ -6,7 +6,7 @@
 use Drupal\Core\Routing\RouteBuildEvent;
 use Drupal\Tests\UnitTestCase;
 use PHPUnit\Framework\Error\Warning;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\Routing\Route;
 use Symfony\Component\Routing\RouteCollection;
 
diff --git a/core/tests/Drupal/Tests/Core/Menu/MenuActiveTrailTest.php b/core/tests/Drupal/Tests/Core/Menu/MenuActiveTrailTest.php
index f197c45e07..30ee465ad8 100644
--- a/core/tests/Drupal/Tests/Core/Menu/MenuActiveTrailTest.php
+++ b/core/tests/Drupal/Tests/Core/Menu/MenuActiveTrailTest.php
@@ -5,7 +5,7 @@
 use Drupal\Core\Menu\MenuActiveTrail;
 use Drupal\Core\Routing\CurrentRouteMatch;
 use Drupal\Tests\UnitTestCase;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\DependencyInjection\Container;
 use Symfony\Component\HttpFoundation\ParameterBag;
 use Symfony\Component\HttpFoundation\Request;
diff --git a/core/tests/Drupal/Tests/Core/ParamConverter/ParamConverterManagerTest.php b/core/tests/Drupal/Tests/Core/ParamConverter/ParamConverterManagerTest.php
index f6f2767516..8c801b4468 100644
--- a/core/tests/Drupal/Tests/Core/ParamConverter/ParamConverterManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/ParamConverter/ParamConverterManagerTest.php
@@ -5,7 +5,7 @@
 use Drupal\Core\ParamConverter\ParamConverterManager;
 use Drupal\Core\ParamConverter\ParamNotConvertedException;
 use Drupal\Tests\UnitTestCase;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\Routing\Route;
 use Symfony\Component\Routing\RouteCollection;
 
diff --git a/core/tests/Drupal/Tests/Core/Path/PathValidatorTest.php b/core/tests/Drupal/Tests/Core/Path/PathValidatorTest.php
index 2dfbea9068..000cf6263d 100644
--- a/core/tests/Drupal/Tests/Core/Path/PathValidatorTest.php
+++ b/core/tests/Drupal/Tests/Core/Path/PathValidatorTest.php
@@ -5,7 +5,7 @@
 use Drupal\Core\ParamConverter\ParamNotConvertedException;
 use Drupal\Core\Path\PathValidator;
 use Drupal\Tests\UnitTestCase;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\ParameterBag;
 use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
 use Symfony\Component\Routing\Exception\MethodNotAllowedException;
diff --git a/core/tests/Drupal/Tests/Core/Routing/AccessAwareRouterTest.php b/core/tests/Drupal/Tests/Core/Routing/AccessAwareRouterTest.php
index 6038ece5ff..daf3392d68 100644
--- a/core/tests/Drupal/Tests/Core/Routing/AccessAwareRouterTest.php
+++ b/core/tests/Drupal/Tests/Core/Routing/AccessAwareRouterTest.php
@@ -6,7 +6,7 @@
 use Drupal\Core\Routing\AccessAwareRouter;
 use Drupal\Core\Routing\AccessAwareRouterInterface;
 use Drupal\Tests\UnitTestCase;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
 use Symfony\Component\Routing\Route;
diff --git a/core/tests/Drupal/Tests/Core/Routing/CurrentRouteMatchTest.php b/core/tests/Drupal/Tests/Core/Routing/CurrentRouteMatchTest.php
index ec3861cf36..77ce024059 100644
--- a/core/tests/Drupal/Tests/Core/Routing/CurrentRouteMatchTest.php
+++ b/core/tests/Drupal/Tests/Core/Routing/CurrentRouteMatchTest.php
@@ -3,7 +3,7 @@
 namespace Drupal\Tests\Core\Routing;
 
 use Drupal\Core\Routing\CurrentRouteMatch;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\ParameterBag;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\RequestStack;
diff --git a/core/tests/Drupal/Tests/Core/Routing/RouteMatchTest.php b/core/tests/Drupal/Tests/Core/Routing/RouteMatchTest.php
index 0a3c65cbe9..a5bfcb33da 100644
--- a/core/tests/Drupal/Tests/Core/Routing/RouteMatchTest.php
+++ b/core/tests/Drupal/Tests/Core/Routing/RouteMatchTest.php
@@ -3,7 +3,7 @@
 namespace Drupal\Tests\Core\Routing;
 
 use Drupal\Core\Routing\RouteMatch;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\ParameterBag;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
diff --git a/core/tests/Drupal/Tests/Core/UrlTest.php b/core/tests/Drupal/Tests/Core/UrlTest.php
index 5843bae302..5da2eb7f12 100644
--- a/core/tests/Drupal/Tests/Core/UrlTest.php
+++ b/core/tests/Drupal/Tests/Core/UrlTest.php
@@ -14,7 +14,7 @@
 use Drupal\Core\Routing\RouteMatch;
 use Drupal\Core\Url;
 use Drupal\Tests\UnitTestCase;
-use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Drupal\Core\Routing\RouteObjectInterface;
 use Symfony\Component\HttpFoundation\ParameterBag;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Exception\InvalidParameterException;