diff --git a/src/Serializer/AbstractItemNormalizer.php b/src/Serializer/AbstractItemNormalizer.php
index 159e0967268..0042511fe2a 100644
--- a/src/Serializer/AbstractItemNormalizer.php
+++ b/src/Serializer/AbstractItemNormalizer.php
@@ -220,7 +220,7 @@ public function denormalize(mixed $data, string $class, ?string $format = null,
                 throw new LogicException('Cannot denormalize the input because the injected serializer is not a denormalizer');
             }
 
-            unset($context['input'], $context['operation'], $context['operation_name']);
+            unset($context['input'], $context['operation'], $context['operation_name'], $context['uri_variables']);
             $context['resource_class'] = $inputClass;
 
             try {
diff --git a/src/Symfony/Routing/IriConverter.php b/src/Symfony/Routing/IriConverter.php
index 2f727e508e6..9ca94fa0673 100644
--- a/src/Symfony/Routing/IriConverter.php
+++ b/src/Symfony/Routing/IriConverter.php
@@ -78,6 +78,7 @@ public function getResourceFromIri(string $iri, array $context = [], ?Operation
             throw new InvalidArgumentException(sprintf('No resource associated to "%s".', $iri));
         }
 
+        // uri_variables come from the Request context and may not be available
         foreach ($context['uri_variables'] ?? [] as $key => $value) {
             if (!isset($parameters[$key]) || $parameters[$key] !== (string) $value) {
                 throw new InvalidArgumentException(sprintf('The iri "%s" does not reference the correct resource.', $iri));
diff --git a/tests/Fixtures/TestBundle/Entity/Issue6465/Bar.php b/tests/Fixtures/TestBundle/Entity/Issue6465/Bar.php
new file mode 100644
index 00000000000..c9bd992566f
--- /dev/null
+++ b/tests/Fixtures/TestBundle/Entity/Issue6465/Bar.php
@@ -0,0 +1,31 @@
+<?php
+
+/*
+ * This file is part of the API Platform project.
+ *
+ * (c) Kévin Dunglas <dunglas@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace ApiPlatform\Tests\Fixtures\TestBundle\Entity\Issue6465;
+
+use ApiPlatform\Metadata\ApiResource;
+use Doctrine\ORM\Mapping as ORM;
+
+#[ORM\Entity()]
+#[ApiResource(shortName: 'Bar6465')]
+#[ORM\Table(name: 'bar6465')]
+class Bar
+{
+    #[ORM\Id]
+    #[ORM\GeneratedValue]
+    #[ORM\Column]
+    public ?int $id = null;
+
+    #[ORM\Column]
+    public string $title = '';
+}
diff --git a/tests/Fixtures/TestBundle/Entity/Issue6465/CustomInput.php b/tests/Fixtures/TestBundle/Entity/Issue6465/CustomInput.php
new file mode 100644
index 00000000000..3f99290d8bb
--- /dev/null
+++ b/tests/Fixtures/TestBundle/Entity/Issue6465/CustomInput.php
@@ -0,0 +1,22 @@
+<?php
+
+/*
+ * This file is part of the API Platform project.
+ *
+ * (c) Kévin Dunglas <dunglas@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace ApiPlatform\Tests\Fixtures\TestBundle\Entity\Issue6465;
+
+use Symfony\Component\Validator\Constraints\NotBlank;
+
+class CustomInput
+{
+    #[NotBlank]
+    public Bar $bar;
+}
diff --git a/tests/Fixtures/TestBundle/Entity/Issue6465/CustomOutput.php b/tests/Fixtures/TestBundle/Entity/Issue6465/CustomOutput.php
new file mode 100644
index 00000000000..49f700721a4
--- /dev/null
+++ b/tests/Fixtures/TestBundle/Entity/Issue6465/CustomOutput.php
@@ -0,0 +1,21 @@
+<?php
+
+/*
+ * This file is part of the API Platform project.
+ *
+ * (c) Kévin Dunglas <dunglas@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace ApiPlatform\Tests\Fixtures\TestBundle\Entity\Issue6465;
+
+class CustomOutput
+{
+    public function __construct(public string $title)
+    {
+    }
+}
diff --git a/tests/Fixtures/TestBundle/Entity/Issue6465/Foo.php b/tests/Fixtures/TestBundle/Entity/Issue6465/Foo.php
new file mode 100644
index 00000000000..359b22e6605
--- /dev/null
+++ b/tests/Fixtures/TestBundle/Entity/Issue6465/Foo.php
@@ -0,0 +1,58 @@
+<?php
+
+/*
+ * This file is part of the API Platform project.
+ *
+ * (c) Kévin Dunglas <dunglas@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace ApiPlatform\Tests\Fixtures\TestBundle\Entity\Issue6465;
+
+use ApiPlatform\Metadata\ApiResource;
+use ApiPlatform\Metadata\Get;
+use ApiPlatform\Metadata\GetCollection;
+use ApiPlatform\Metadata\Link;
+use ApiPlatform\Metadata\Post;
+use Doctrine\ORM\Mapping as ORM;
+
+#[ORM\Entity()]
+#[ORM\Table(name: 'foo6465')]
+#[ApiResource(
+    shortName: 'Foo6465',
+    operations: [
+        new Get(),
+        new GetCollection(),
+        new Post(),
+        new Post(
+            uriTemplate: '/foo/{id}/validate',
+            uriVariables: ['id' => new Link(fromClass: Foo::class)],
+            status: 200,
+            input: CustomInput::class,
+            output: CustomOutput::class,
+            processor: [self::class, 'process'],
+        ),
+    ]
+)]
+class Foo
+{
+    #[ORM\Id]
+    #[ORM\GeneratedValue]
+    #[ORM\Column]
+    public ?int $id = null;
+
+    #[ORM\Column(length: 255)]
+    public ?string $title = null;
+
+    /**
+     * @param CustomInput $data
+     */
+    public static function process($data): CustomOutput
+    {
+        return new CustomOutput($data->bar->title);
+    }
+}
diff --git a/tests/Functional/JsonLd.php b/tests/Functional/JsonLd.php
new file mode 100644
index 00000000000..da76c723e76
--- /dev/null
+++ b/tests/Functional/JsonLd.php
@@ -0,0 +1,91 @@
+<?php
+
+/*
+ * This file is part of the API Platform project.
+ *
+ * (c) Kévin Dunglas <dunglas@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace ApiPlatform\Tests\Functional;
+
+use ApiPlatform\Symfony\Bundle\Test\ApiTestCase;
+use ApiPlatform\Tests\Fixtures\TestBundle\Entity\Issue6465\Bar;
+use ApiPlatform\Tests\Fixtures\TestBundle\Entity\Issue6465\Foo;
+use Doctrine\ORM\EntityManagerInterface;
+use Doctrine\ORM\Tools\SchemaTool;
+
+class JsonLd extends ApiTestCase
+{
+    /**
+     * The input DTO denormalizes an existing Doctrine entity.
+     */
+    public function testIssue6465(): void
+    {
+        $container = static::getContainer();
+        if ('mongodb' === $container->getParameter('kernel.environment')) {
+            $this->markTestSkipped();
+        }
+
+        $response = self::createClient()->request('POST', '/foo/1/validate', [
+            'json' => ['bar' => '/bar6465s/2'],
+        ]);
+
+        $res = $response->toArray();
+        $this->assertEquals('Bar two', $res['title']);
+    }
+
+    protected function setUp(): void
+    {
+        self::bootKernel();
+
+        $container = static::getContainer();
+        $registry = $container->get('doctrine');
+        $manager = $registry->getManager();
+        if (!$manager instanceof EntityManagerInterface) {
+            return;
+        }
+
+        $classes = [];
+        foreach ([Foo::class, Bar::class] as $entityClass) {
+            $classes[] = $manager->getClassMetadata($entityClass);
+        }
+
+        $schemaTool = new SchemaTool($manager);
+        @$schemaTool->createSchema($classes);
+
+        $foo = new Foo();
+        $foo->title = 'Foo';
+        $manager->persist($foo);
+        $bar = new Bar();
+        $bar->title = 'Bar one';
+        $manager->persist($bar);
+        $bar2 = new Bar();
+        $bar2->title = 'Bar two';
+        $manager->persist($bar2);
+        $manager->flush();
+    }
+
+    protected function tearDown(): void
+    {
+        $container = static::getContainer();
+        $registry = $container->get('doctrine');
+        $manager = $registry->getManager();
+        if (!$manager instanceof EntityManagerInterface) {
+            return;
+        }
+
+        $classes = [];
+        foreach ([Foo::class, Bar::class] as $entityClass) {
+            $classes[] = $manager->getClassMetadata($entityClass);
+        }
+
+        $schemaTool = new SchemaTool($manager);
+        @$schemaTool->dropSchema($classes);
+        parent::tearDown();
+    }
+}