diff --git a/App/Webapi/Request.php b/App/Webapi/Request.php
new file mode 100644
index 0000000..b242523
--- /dev/null
+++ b/App/Webapi/Request.php
@@ -0,0 +1,91 @@
+<?php
+/**
+ * Copyright © OpenGento, All rights reserved.
+ * See LICENSE bundled with this library for license details.
+ */
+declare(strict_types=1);
+
+namespace Opengento\Application\Webapi;
+
+use Laminas\Stdlib\Parameters;
+use Magento\Framework\ObjectManager\ResetAfterRequestInterface;
+use Magento\Framework\Webapi\Request as MagentoWebapiRequest;
+
+/**
+ * Worker-mode-aware variant of {@see MagentoWebapiRequest}.
+ *
+ * Background
+ * ----------
+ * `Magento\Framework\Webapi\Request` extends `Magento\Framework\HTTP\PhpEnvironment\Request`
+ * (which transitively extends `Laminas\Http\PhpEnvironment\Request`). The parent
+ * chain holds per-request state on protected fields — `$module`, `$controller`,
+ * `$action`, `$pathInfo`, `$requestString`, `$params`, `$aliases`, `$dispatched`,
+ * `$forwarded`, `$baseUrl`, `$basePath`, `$requestUri`, `$method`, `$headers`,
+ * `$metadata`, `$content` — but neither the parent nor `Webapi\Request` itself
+ * implements {@see ResetAfterRequestInterface}.
+ *
+ * `Magento\Framework\App\Request\Http` (which is a SIBLING class, not a parent
+ * of `Webapi\Request`) DOES implement the interface and DOES reset all those
+ * fields. So in worker mode the `/index.php` request path stays clean across
+ * requests but `/rest/V1/...` and `/soap/...` requests on the same worker
+ * inherit state from previous Webapi requests — historically the source of
+ * mysterious "wrong store / wrong area / leaked auth" bugs.
+ *
+ * Fix
+ * ---
+ * This subclass implements {@see ResetAfterRequestInterface} and provides
+ * `_resetState()` with the same body Magento's own `App\Request\Http` uses.
+ * Wired in via `etc/di.xml` preference so all DI consumers of
+ * `Magento\Framework\Webapi\Request` get our subclass.
+ *
+ * Compatibility
+ * -------------
+ * `Magento\Framework\Webapi\Request` is byte-identical between Magento 2.4.7
+ * and 2.4.9-beta1 (Copyright header aside). All the protected fields we
+ * touch are declared by the shared `HTTP\PhpEnvironment\Request` parent and
+ * are stable across the 2.4.x line.
+ *
+ * Open questions for the maintainer
+ * ---------------------------------
+ *   1. Are there other Laminas-extending Magento classes with the same
+ *      gap that would deserve the same treatment? `Magento\Framework\HTTP\Client\*`
+ *      is the next-likely candidate (outbound HTTP client, holds cookies/auth
+ *      across requests in worker mode). I scoped this PR to inbound `Webapi\Request`
+ *      to keep the change set reviewable; happy to expand.
+ *   2. Should we instead push for `Magento\Framework\Webapi\Request` to
+ *      implement `ResetAfterRequestInterface` upstream in magento/magento2?
+ *      I can file the PR there as a follow-up if you'd like — this subclass
+ *      could then become a thin extension that gets retired when upstream
+ *      lands.
+ */
+class Request extends MagentoWebapiRequest implements ResetAfterRequestInterface
+{
+    public function _resetState(): void
+    {
+        // Body mirrors Magento\Framework\App\Request\Http::_resetState() — the
+        // sibling class for the /index.php path that already does this right.
+        $this->setEnv(new Parameters($_ENV));
+        $this->serverParams = new Parameters($_SERVER);
+        $this->setQuery(new Parameters([]));
+        $this->setPost(new Parameters([]));
+        $this->setFiles(new Parameters([]));
+        $this->module = null;
+        $this->controller = null;
+        $this->action = null;
+        $this->pathInfo = '';
+        $this->requestString = '';
+        $this->params = [];
+        $this->aliases = [];
+        $this->dispatched = false;
+        $this->forwarded = null;
+        $this->baseUrl = null;
+        $this->basePath = null;
+        $this->requestUri = null;
+        $this->method = 'GET';
+        $this->allowCustomMethods = true;
+        $this->uri = null;
+        $this->headers = null;
+        $this->metadata = [];
+        $this->content = '';
+    }
+}
diff --git a/etc/di.xml b/etc/di.xml
index e9a023b..5d73e61 100644
--- a/etc/di.xml
+++ b/etc/di.xml
@@ -6,6 +6,7 @@
  */
 -->
 <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
+    <preference for="Magento\Framework\Webapi\Request" type="Opengento\Application\Webapi\Request"/>
     <type name="Magento\Framework\App\State\ReloadProcessorComposite">
         <arguments>
             <argument name="processors" xsi:type="array">