diff --git a/core/core.services.yml b/core/core.services.yml
index 796ece3..f35c607 100644
--- a/core/core.services.yml
+++ b/core/core.services.yml
@@ -840,7 +840,7 @@ services:
       - [setContext, ['@?router.request_context']]
   url_generator:
     class: Drupal\Core\Render\MetadataBubblingUrlGenerator
-    arguments: ['@url_generator.non_bubbling', '@renderer']
+    arguments: ['@url_generator.non_bubbling', '@renderer', '@request_stack']
     calls:
       - [setContext, ['@?router.request_context']]
   redirect.destination:
diff --git a/core/lib/Drupal/Core/Render/MetadataBubblingUrlGenerator.php b/core/lib/Drupal/Core/Render/MetadataBubblingUrlGenerator.php
index 6a5527b..d1327d1 100644
--- a/core/lib/Drupal/Core/Render/MetadataBubblingUrlGenerator.php
+++ b/core/lib/Drupal/Core/Render/MetadataBubblingUrlGenerator.php
@@ -4,6 +4,7 @@
 
 use Drupal\Core\GeneratedUrl;
 use Drupal\Core\Routing\UrlGeneratorInterface;
+use Symfony\Component\HttpFoundation\RequestStack;
 use Symfony\Component\Routing\RequestContext as SymfonyRequestContext;
 
 /**
@@ -35,16 +36,27 @@ class MetadataBubblingUrlGenerator implements UrlGeneratorInterface {
   protected $renderer;
 
   /**
+   * The request stack.
+   *
+   * @var \Symfony\Component\HttpFoundation\RequestStack
+   */
+  protected $requestStack;
+
+
+  /**
    * Constructs a new bubbling URL generator service.
    *
    * @param \Drupal\Core\Routing\UrlGeneratorInterface $url_generator
    *   The non-bubbling URL generator.
    * @param \Drupal\Core\Render\RendererInterface $renderer
    *   The renderer.
+   * @param \Symfony\Component\HttpFoundation\RequestStack
+   *   The request stack.
    */
-  public function __construct(UrlGeneratorInterface $url_generator, RendererInterface $renderer) {
+  public function __construct(UrlGeneratorInterface $url_generator, RendererInterface $renderer, RequestStack $request_stack) {
     $this->urlGenerator = $url_generator;
     $this->renderer = $renderer;
+    $this->requestStack = $request_stack;
   }
 
   /**
@@ -80,8 +92,10 @@ protected function bubble(GeneratedUrl $generated_url, array $options = []) {
     // Bubbling metadata makes sense only if the code is executed inside a
     // render context. All code running outside controllers has no render
     // context by default, so URLs used there are not supposed to affect the
-    // response cacheability.
-    if ($this->renderer->hasRenderContext()) {
+    // response cacheability. Only do this for GET/HEAD requests since render
+    // caching does not apply to other responses.
+    $request = $this->requestStack->getCurrentRequest();
+    if ($request->isMethodCacheable() && $this->renderer->hasRenderContext()) {
       $build = [];
       $generated_url->applyTo($build);
       $this->renderer->render($build);
diff --git a/core/tests/Drupal/Tests/Core/Render/MetadataBubblingUrlGeneratorTest.php b/core/tests/Drupal/Tests/Core/Render/MetadataBubblingUrlGeneratorTest.php
index 9524b0d9..2cbc13c 100644
--- a/core/tests/Drupal/Tests/Core/Render/MetadataBubblingUrlGeneratorTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/MetadataBubblingUrlGeneratorTest.php
@@ -5,6 +5,7 @@
 use Drupal\Core\Render\MetadataBubblingUrlGenerator;
 use Drupal\Core\Url;
 use Drupal\Tests\Core\Routing\UrlGeneratorTest;
+use Symfony\Component\HttpFoundation\Request;
 
 /**
  * Confirm that the MetadataBubblingUrlGenerator is functioning properly.
@@ -33,7 +34,7 @@ protected function setUp() {
       ->method('hasRenderContext')
       ->willReturn(TRUE);
 
-    $this->generator = new MetadataBubblingUrlGenerator($this->generator, $this->renderer);
+    $this->generator = new MetadataBubblingUrlGenerator($this->generator, $this->renderer, $this->requestStack);
   }
 
   /**
@@ -50,9 +51,13 @@ protected function setUp() {
    *
    * @dataProvider providerUrlBubbleableMetadataBubbling
    */
-  public function testUrlBubbleableMetadataBubbling($collect_bubbleable_metadata, $invocations, array $options) {
+  public function testUrlBubbleableMetadataBubbling($collect_bubbleable_metadata, $invocations, $method, array $options) {
     $self = $this;
 
+    $request = Request::create('some/path');
+    $request->setMethod($method);
+    $this->requestStack->push($request);
+
     $this->renderer->expects($this->exactly($invocations))
       ->method('render')
       ->willReturnCallback(function ($build) use ($self) {
@@ -69,10 +74,14 @@ public function testUrlBubbleableMetadataBubbling($collect_bubbleable_metadata,
    */
   public function providerUrlBubbleableMetadataBubbling() {
     return [
-      // No bubbling when bubbleable metadata is collected.
-      [TRUE, 0, []],
-      // Bubbling when bubbleable metadata is not collected.
-      [FALSE, 1, []],
+      // No bubbling when bubbleable metadata is collected and safe method
+      [TRUE, 0, 'GET', []],
+      // Bubbling when bubbleable metadata is not collected and safe method
+      [FALSE, 1, 'GET', []],
+      // No bubbling when bubbleable metadata is collected and not safe method
+      [TRUE, 0, 'POST', []],
+      // No bubbling when bubbleable metadata is not collected and not safe method
+      [FALSE, 0, 'POST', []],
     ];
   }