diff --git a/src/Form/Control/Upload.php b/src/Form/Control/Upload.php
index 7d09e9703b..13ef930fd0 100644
--- a/src/Form/Control/Upload.php
+++ b/src/Form/Control/Upload.php
@@ -140,7 +140,7 @@ public function addJsAction(JsExpressionable $action): void
     public function onUpload(\Closure $fx): void
     {
         $this->hasUploadCb = true;
-        if (($_POST['fUploadAction'] ?? null) === self::UPLOAD_ACTION) {
+        if ($this->getApp()->tryGetRequestPostParam('fUploadAction') === self::UPLOAD_ACTION) {
             $this->cb->set(function () use ($fx) {
                 $postFiles = [];
                 for ($i = 0;; ++$i) {
@@ -187,7 +187,7 @@ public function onUpload(\Closure $fx): void
     public function onDelete(\Closure $fx): void
     {
         $this->hasDeleteCb = true;
-        if (($_POST['fUploadAction'] ?? null) === self::DELETE_ACTION) {
+        if ($this->getApp()->tryGetRequestPostParam('fUploadAction') === self::DELETE_ACTION) {
             $this->cb->set(function () use ($fx) {
                 $fileId = $_POST['fUploadId'];
 
@@ -206,7 +206,7 @@ protected function renderView(): void
         parent::renderView();
 
         if ($this->cb->canTerminate()) {
-            $uploadActionRaw = $_POST['fUploadAction'] ?? null;
+            $uploadActionRaw = $this->getApp()->tryGetRequestPostParam('fUploadAction');
             if (!$this->hasUploadCb && ($uploadActionRaw === self::UPLOAD_ACTION)) {
                 throw new Exception('Missing onUpload callback');
             } elseif (!$this->hasDeleteCb && ($uploadActionRaw === self::DELETE_ACTION)) {
diff --git a/src/UserAction/JsCallbackExecutor.php b/src/UserAction/JsCallbackExecutor.php
index 4388e15fc6..e96953850c 100644
--- a/src/UserAction/JsCallbackExecutor.php
+++ b/src/UserAction/JsCallbackExecutor.php
@@ -87,7 +87,7 @@ public function executeModelAction(): void
             $this->set(function (Jquery $j, ...$values) {
                 $id = $this->getApp()->uiPersistence->typecastLoadField(
                     $this->action->getModel()->getField($this->action->getModel()->idField),
-                    $_POST[$this->name] ?? null
+                    $this->getApp()->tryGetRequestPostParam($this->name)
                 );
                 if ($id && $this->action->appliesTo === Model\UserAction::APPLIES_TO_SINGLE_RECORD) {
                     if ($this->action->isOwnerEntity() && $this->action->getEntity()->getId()) {
diff --git a/src/View.php b/src/View.php
index 14e84be443..182210e882 100644
--- a/src/View.php
+++ b/src/View.php
@@ -854,10 +854,10 @@ public function jsGetStoreData(): array
     {
         $data = [];
         $data['local'] = $this->getApp()->decodeJson(
-            $this->getApp()->tryGetRequestGetParam($this->name . '_local_store') ?? $_POST[$this->name . '_local_store'] ?? 'null'
+            $this->getApp()->tryGetRequestGetParam($this->name . '_local_store') ?? $this->getApp()->tryGetRequestPostParam($this->name . '_local_store') ?? 'null'
         );
         $data['session'] = $this->getApp()->decodeJson(
-            $this->getApp()->tryGetRequestGetParam($this->name . '_session_store') ?? $_POST[$this->name . '_session_store'] ?? 'null'
+            $this->getApp()->tryGetRequestGetParam($this->name . '_session_store') ?? $this->getApp()->tryGetRequestPostParam($this->name . '_session_store') ?? 'null'
         );
 
         return $data;
diff --git a/src/VueComponent/InlineEdit.php b/src/VueComponent/InlineEdit.php
index f2c9d3748a..6452ab1495 100644
--- a/src/VueComponent/InlineEdit.php
+++ b/src/VueComponent/InlineEdit.php
@@ -125,7 +125,7 @@ public function onChange(\Closure $fx): void
         if (!$this->autoSave) {
             $value = $this->getApp()->uiPersistence->typecastLoadField(
                 $this->model->getField($this->fieldName),
-                $_POST['value'] ?? null
+                $this->getApp()->tryGetRequestPostParam('value')
             );
             $this->cb->set(static function () use ($fx, $value) {
                 return $fx($value);