diff --git a/application/Espo/Core/Acl/ScopeData.php b/application/Espo/Core/Acl/ScopeData.php
index ff2c9a141d..04c21f08a4 100644
--- a/application/Espo/Core/Acl/ScopeData.php
+++ b/application/Espo/Core/Acl/ScopeData.php
@@ -31,6 +31,7 @@ namespace Espo\Core\Acl;
 
 use StdClass;
 use InvalidArgumentException;
+use RuntimeException;
 
 /**
  * Scope data.
@@ -47,6 +48,11 @@ class ScopeData
     {
     }
 
+    public function __get(string $name)
+    {
+        throw new RuntimeException("Accessing ScopeData properties is not allowed.");
+    }
+
     /**
      * Get a raw value.
      *
diff --git a/tests/unit/Espo/Core/Acl/ScopeDataTest.php b/tests/unit/Espo/Core/Acl/ScopeDataTest.php
index ab15dd8b5e..850a3ad2c6 100644
--- a/tests/unit/Espo/Core/Acl/ScopeDataTest.php
+++ b/tests/unit/Espo/Core/Acl/ScopeDataTest.php
@@ -35,6 +35,7 @@ use Espo\Core\{
 };
 
 use InvalidArgumentException;
+use RuntimeException;
 
 class ScopeDataTest extends \PHPUnit\Framework\TestCase
 {
@@ -135,4 +136,13 @@ class ScopeDataTest extends \PHPUnit\Framework\TestCase
 
         $this->assertFalse($data->hasNotNo());
     }
+
+    public function testAccessingProperty()
+    {
+        $this->expectException(RuntimeException::class);
+
+        $data = ScopeData::fromRaw(false);
+
+        $data->read;
+    }
 }