diff --git a/services/nginx/app/openapi.yaml b/services/nginx/app/openapi.yaml
index c5c5e30e..646c6b6b 100644
--- a/services/nginx/app/openapi.yaml
+++ b/services/nginx/app/openapi.yaml
@@ -10606,10 +10606,10 @@ paths:
       tags:
         - Users
       summary: Get customer attributes
-      description: Get custom attributes for a customer
+      description: Get custom attributes for a customer. Authenticated customer accounts may read their own attributes without list_customer_attributes.
       operationId: getCustomerAttributes
       parameters:
-        - name: customer_id
+        - name: customer_number
           in: query
           schema:
             type: integer
diff --git a/services/nginx/app/routes/customerAttributes.php b/services/nginx/app/routes/customerAttributes.php
index a0db11a9..274892d8 100644
--- a/services/nginx/app/routes/customerAttributes.php
+++ b/services/nginx/app/routes/customerAttributes.php
@@ -16,11 +16,12 @@ class customerAttributes
         $this->get('/customer/attributes', function () {
             // Require the user to be logged in
             global $response;
-            $this->requirePermission('list_customer_attributes');
             // Get the user object
-            $user = (new authentication())->get_user();
+            $auth = new authentication();
+            $user = $auth->get_user();
+            $subuser = $auth->get_subuser();
             // Check if the request was successful
-            if ($user) {
+            if ($user || $subuser) {
                 // Get the query parameters from the URL
                 $data = $_GET;
                 // Check if the required fields are set
@@ -32,14 +33,19 @@ class customerAttributes
                     $response->error('Customer Number must be a number', 400);
                 }
                 // Check if the user exists
-                if (!(new users_o())->automaticGetTargetUserFromRequest()->exists()) {
+                $target_user = (new users_o())->automaticGetTargetUserFromRequest();
+                if (!$target_user->exists()) {
                     $response->error('Customer not found', 400);
                 }
+                if (!$this->canListTargetCustomerAttributes($target_user)) {
+                    $this->requirePermission('list_customer_attributes');
+                }
                 // Log the incident
-                (new logs_o())->add('customer_attributes', 'global', 1, $user->id, 'LIST_CUSTOMER_ATTRIBUTES', 'Successfully listed customer attributes');
+                $actor_id = $user !== false ? (int)$user->id : (int)($subuser->id ?? 0);
+                (new logs_o())->add('customer_attributes', 'global', 1, $actor_id, 'LIST_CUSTOMER_ATTRIBUTES', 'Successfully listed customer attributes');
                 // Return the list of customer notes
                 $response->success(
-                    (new users_o())->automaticGetTargetUserFromRequest()->getUserAttributes()
+                    $target_user->getUserAttributes()
                 );
             } else {
                 // Log the incident
@@ -49,7 +55,7 @@ class customerAttributes
             }
         },
             [
-                'list_customer_attributes' => 'List all customer attributes'
+                'list_customer_attributes' => 'List all customer attributes. Authenticated customer accounts may list their own customer attributes without this permission.'
             ]
         );
 
@@ -127,4 +133,29 @@ class customerAttributes
             ]
         );
     }
-}
\ No newline at end of file
+
+    private function canListTargetCustomerAttributes(users_o $target_user): bool
+    {
+        if (!$target_user->exists()) {
+            return false;
+        }
+
+        $target_customer_number = (int)$target_user->customer_number->value();
+        if ($target_customer_number <= 0) {
+            return false;
+        }
+
+        $auth = new authentication();
+        $user = $auth->get_user();
+        if (
+            $user !== false
+            && $user->exists()
+            && $this->hasPermission('user')
+            && (int)$user->customer_number->value() === $target_customer_number
+        ) {
+            return true;
+        }
+
+        return $auth->get_subuser() !== false && $this->isOwnCustomerContext($target_customer_number);
+    }
+}
diff --git a/services/nginx/app/tests/Api/CustomerAttributesApiTest.php b/services/nginx/app/tests/Api/CustomerAttributesApiTest.php
new file mode 100644
index 00000000..dc2b9d7e
--- /dev/null
+++ b/services/nginx/app/tests/Api/CustomerAttributesApiTest.php
@@ -0,0 +1,74 @@
+<?php
+
+declare(strict_types=1);
+
+usesApiSuite();
+
+it('lets customer booking sessions read their own customer attributes', function (): void {
+    api_test_covers('GET /customer/attributes', 'customer-access');
+
+    $session = api_fixtures()->createUserSession(['user']);
+    api_fixtures()->addCustomerAttribute((int)$session['user']['id'], 'onlyTankCleaning');
+
+    $response = api_client()->get(
+        '/customer/attributes?customer_number=' . (int)$session['user']['customer_number'],
+        $session['headers']
+    );
+
+    $response
+        ->assertStatus(200)
+        ->assertEnvelope()
+        ->assertSuccess();
+
+    $attributes = array_map(
+        static fn(array $attribute): string => (string)($attribute['attribute'] ?? ''),
+        is_array($response->data()) ? $response->data() : []
+    );
+
+    expect($attributes)->toContain('onlyTankCleaning');
+    expect($response->body)->not->toContain('list_customer_attributes');
+});
+
+it('keeps customer attribute reads scoped to the authenticated customer', function (): void {
+    api_test_covers('GET /customer/attributes', 'customer-access');
+
+    $session = api_fixtures()->createUserSession(['user']);
+    $otherCustomer = api_fixtures()->createUser(['display_name' => 'Other Attribute Customer']);
+    api_fixtures()->addCustomerAttribute((int)$otherCustomer['id'], 'onlyTankCleaning');
+
+    $response = api_client()->get(
+        '/customer/attributes?customer_number=' . (int)$otherCustomer['customer_number'],
+        $session['headers']
+    );
+
+    $response
+        ->assertStatus(403)
+        ->assertEnvelope()
+        ->assertSuccess(false)
+        ->assertMissingPermissions(['list_customer_attributes']);
+});
+
+it('still lets attribute managers read another customer attributes', function (): void {
+    api_test_covers('GET /customer/attributes', 'permissions');
+
+    $session = api_fixtures()->createUserSession(['list_customer_attributes']);
+    $customer = api_fixtures()->createUser(['display_name' => 'Managed Attribute Customer']);
+    api_fixtures()->addCustomerAttribute((int)$customer['id'], 'onlyTankCleaning');
+
+    $response = api_client()->get(
+        '/customer/attributes?customer_number=' . (int)$customer['customer_number'],
+        $session['headers']
+    );
+
+    $response
+        ->assertStatus(200)
+        ->assertEnvelope()
+        ->assertSuccess();
+
+    $attributes = array_map(
+        static fn(array $attribute): string => (string)($attribute['attribute'] ?? ''),
+        is_array($response->data()) ? $response->data() : []
+    );
+
+    expect($attributes)->toContain('onlyTankCleaning');
+});