diff --git a/src/Autocomplete/src/Controller/EntityAutocompleteController.php b/src/Autocomplete/src/Controller/EntityAutocompleteController.php
index e65cb6dad12..de3fc6a10dc 100644
--- a/src/Autocomplete/src/Controller/EntityAutocompleteController.php
+++ b/src/Autocomplete/src/Controller/EntityAutocompleteController.php
@@ -18,16 +18,20 @@
 use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
 use Symfony\UX\Autocomplete\AutocompleteResultsExecutor;
 use Symfony\UX\Autocomplete\AutocompleterRegistry;
+use Symfony\UX\Autocomplete\Calculator\ChecksumCalculatorInterface;
 
 /**
  * @author Ryan Weaver <ryan@symfonycasts.com>
  */
 final class EntityAutocompleteController
 {
+    public const EXTRA_OPTIONS = 'extra_options';
+
     public function __construct(
         private AutocompleterRegistry $autocompleteFieldRegistry,
         private AutocompleteResultsExecutor $autocompleteResultsExecutor,
         private UrlGeneratorInterface $urlGenerator,
+        private ChecksumCalculatorInterface $checksumCalculator,
     ) {
     }
 
@@ -38,6 +42,11 @@ public function __invoke(string $alias, Request $request): Response
             throw new NotFoundHttpException(sprintf('No autocompleter found for "%s". Available autocompleters are: (%s)', $alias, implode(', ', $this->autocompleteFieldRegistry->getAutocompleterNames())));
         }
 
+        $extraOptions = $this->getExtraOptions($request);
+        $autocompleter = $autocompleter->withOptions([
+            'extra_options' => $extraOptions,
+        ]);
+
         $page = $request->query->getInt('page', 1);
         $nextPage = null;
 
@@ -54,4 +63,26 @@ public function __invoke(string $alias, Request $request): Response
             'next_page' => $nextPage,
         ]);
     }
+
+    /**
+     * @return array<string, scalar|array|null>
+     */
+    private function getExtraOptions(Request $request): array
+    {
+        // TODO: This method should be refactored
+        if (!$request->query->has(self::EXTRA_OPTIONS)) {
+            return [];
+        }
+
+        /** @var array $extraOptions */
+        $extraOptions = json_decode(base64_decode($request->query->get(self::EXTRA_OPTIONS)), true);
+        $checksum = $extraOptions['@checksum'] ?? null;
+        unset($extraOptions['@checksum']);
+
+        if ($checksum !== $this->checksumCalculator->calculateForArray($extraOptions)) {
+            throw new \InvalidArgumentException('The extra options have been tampered with.');
+        }
+
+        return $extraOptions;
+    }
 }
diff --git a/src/Autocomplete/src/DependencyInjection/AutocompleteExtension.php b/src/Autocomplete/src/DependencyInjection/AutocompleteExtension.php
index ea907f4be17..4d22f98c523 100644
--- a/src/Autocomplete/src/DependencyInjection/AutocompleteExtension.php
+++ b/src/Autocomplete/src/DependencyInjection/AutocompleteExtension.php
@@ -117,6 +117,7 @@ private function registerBasicServices(ContainerBuilder $container): void
                 new Reference('ux.autocomplete.autocompleter_registry'),
                 new Reference('ux.autocomplete.results_executor'),
                 new Reference('router'),
+                new Reference('ux.autocomplete.checksum_calculator'),
             ])
             ->addTag('controller.service_arguments')
         ;