CVE-2026-31820

### Impact An authenticated Insecure Direct Object Reference (IDOR) vulnerability exists in multiple shop LiveComponents due to unvalidated resource IDs accepted via `#[LiveArg]` parameters. Unlike props, which are protected by LiveComponent's `@checksum`, `args` are fully user-controlled - any action that accepts a resource ID via `#[LiveArg]` and loads it with `->find()` without ownership validation is vulnerable. Checkout address **FormComponent** (`addressFieldUpdated` action): Accepts an `addressId` via `#[LiveArg]` and loads it without verifying ownership, exposing another user's first name, last name, company, phone number, street, city, postcode, and country. Cart **WidgetComponent** (`refreshCart` action): Accepts a `cartId` via `#[LiveArg]` and loads any order directly from the repository, exposing order total and item count. Cart **SummaryComponent** (`refreshCart` action): Accepts a `cartId` via `#[LiveArg]` and loads any order directly from the repository, exposing subtotal, discount, shipping cost, taxes (excluded and included), and order total. Since `sylius_order` contains both active carts (`state=cart`) and completed orders (`state=new/fulfilled`) in the same ID space, the cart IDOR exposes data from all orders, not just active carts. ### Patches The issue is fixed in versions: 2.0.16, 2.1.12, 2.2.3 and above. ### Workarounds Override vulnerable LiveComponent classes at the project level to add authorization checks to `#[LiveArg]` parameters. #### Step 1. Exclude component overrides from default autowiring In `config/services.yaml`, add `Twig/Component` to the exclude list to prevent duplicate service registration: ```yaml App\: resource: '../src/*' exclude: '../src/{Entity,Kernel.php,Twig/Components}' ``` #### Step 2. Override checkout address FormComponent Create `src/Twig/Components/Checkout/Address/FormComponent.php`: ```php <?php declare(strict_types=1); namespace App\Twig\Components\Checkout\Address; use Sylius\Bundle\ShopBundle\Twig\Component\Checkout\Address\AddressBookComponent; use Sylius\Bundle\UiBundle\Twig\Component\ResourceFormComponentTrait; use Sylius\Bundle\UiBundle\Twig\Component\TemplatePropTrait; use Sylius\Component\Core\Model\OrderInterface; use Sylius\Component\Core\Model\ShopUserInterface; use Sylius\Component\Core\Repository\AddressRepositoryInterface; use Sylius\Component\Core\Repository\OrderRepositoryInterface; use Sylius\Component\Customer\Context\CustomerContextInterface; use Sylius\Component\User\Repository\UserRepositoryInterface; use Symfony\Component\Form\FormFactoryInterface; use Symfony\Component\Form\FormInterface; use Symfony\UX\LiveComponent\Attribute\AsLiveComponent; use Symfony\UX\LiveComponent\Attribute\LiveArg; use Symfony\UX\LiveComponent\Attribute\LiveListener; use Symfony\UX\LiveComponent\Attribute\LiveProp; use Symfony\UX\LiveComponent\Attribute\PreReRender; #[AsLiveComponent] class FormComponent { /** @use ResourceFormComponentTrait<OrderInterface> */ use ResourceFormComponentTrait; use TemplatePropTrait; #[LiveProp] public bool $emailExists = false; /** * @param OrderRepositoryInterface<OrderInterface> $repository * @param UserRepositoryInterface<ShopUserInterface> $shopUserRepository */ public function __construct( OrderRepositoryInterface $repository, FormFactoryInterface $formFactory, string $resourceClass, string $formClass, protected readonly CustomerContextInterface $customerContext, protected readonly UserRepositoryInterface $shopUserRepository, protected readonly AddressRepositoryInterface $addressRepository, ) { $this->initialize($repository, $formFactory, $resourceClass, $formClass); } #[PreReRender(priority: -100)] public function checkEmailExist(): void { $email = $this->formValues['customer']['email'] ?? null; if (null !== $email) { $this->emailExists = $this->shopUserRepository->findOneByEmail($email) !== null; } } #[LiveListener(AddressBookComponent::SYLIUS_SHOP_ADDRESS_UPDATED)] public function addressFieldUpdated(#[LiveArg] mixed $addressId, #[LiveArg] string $field): void { $customer = $this->customerContext->getCustomer(); if (null === $customer) { return; } // Fix: findOneByCustomer instead of find — validates ownership $address = $this->addressRepository->findOneByCustomer((string) $addressId, $customer); if (null === $address) { return; } $newAddress = []; $newAddress['firstName'] = $address->getFirstName(); $newAddress['lastName'] = $address->getLastName(); $newAddress['phoneNumber'] = $address->getPhoneNumber(); $newAddress['company'] = $address->getCompany(); $newAddress['countryCode'] = $address->getCountryCode(); if ($address->getProvinceCode() !== null) { $newAddress['provinceCode'] = $address->getProvinceCode(); } if ($address->getProvinceName() !== null) { $newAddress['provinceName'] = $address->getProvinceName(); } $newAddress['street'] = $address->getStreet(); $newAddress['city'] = $address->getCity(); $newAddress['postcode'] = $address->getPostcode(); $this->formValues[$field] = $newAddress; } protected function instantiateForm(): FormInterface { return $this->formFactory->create( $this->formClass, $this->resource, ['customer' => $this->customerContext->getCustomer()], ); } } ``` #### Step 3. Override cart WidgetComponent Create `src/Twig/Components/Cart/WidgetComponent.php`: ```php <?php declare(strict_types=1); namespace App\Twig\Components\Cart; use Sylius\Bundle\ShopBundle\Twig\Component\Cart\FormComponent; use Sylius\Bundle\UiBundle\Twig\Component\ResourceLivePropTrait; use Sylius\Bundle\UiBundle\Twig\Component\TemplatePropTrait; use Sylius\Component\Core\Model\OrderInterface; use Sylius\Component\Core\Repository\OrderRepositoryInterface; use Sylius\Component\Order\Context\CartContextInterface; use Sylius\Component\Order\Context\CartNotFoundException; use Sylius\Resource\Model\ResourceInterface; use Sylius\TwigHooks\LiveComponent\HookableLiveComponentTrait; use Symfony\UX\LiveComponent\Attribute\AsLiveComponent; use Symfony\UX\LiveComponent\Attribute\LiveArg; use Symfony\UX\LiveComponent\Attribute\LiveListener; use Symfony\UX\LiveComponent\Attribute\LiveProp; use Symfony\UX\LiveComponent\DefaultActionTrait; use Symfony\UX\TwigComponent\Attribute\PreMount; #[AsLiveComponent] class WidgetComponent { use DefaultActionTrait; use HookableLiveComponentTrait; use TemplatePropTrait; /** @use ResourceLivePropTrait<OrderInterface> */ use ResourceLivePropTrait; #[LiveProp(hydrateWith: 'hydrateResource', dehydrateWith: 'dehydrateResource')] public ?ResourceInterface $cart = null; public function __construct( protected readonly CartContextInterface $cartContext, OrderRepositoryInterface $orderRepository, ) { $this->initialize($orderRepository); } #[PreMount] public function initializeCart(): void { $this->cart = $this->getCart(); } #[LiveListener(FormComponent::SYLIUS_SHOP_CART_CHANGED)] #[LiveListener(FormComponent::SYLIUS_SHOP_CART_CLEARED)] public function refreshCart(#[LiveArg] mixed $cartId = null): void { // Fix: ignore user-supplied cartId, always load from session $this->cart = $this->getCart(); } private function getCart(): ?OrderInterface { try { return $this->cartContext->getCart(); } catch (CartNotFoundException) { return null; } return $cart; } } ``` #### Step 4. Override cart SummaryComponent Create `src/Twig/Components/Cart/SummaryComponent.php`: ```php <?php declare(strict_types=1); namespace App\Twig\Components\Cart; use Sylius\Bundle\ShopBundle\Twig\Component\Cart\FormComponent; use Sylius\Bundle\UiBundle\Twig\Component\ResourceLivePropTrait; use Sylius\Bundle\UiBundle\Twig\Component\TemplatePropTrait; use Sylius\Component\Core\Model\OrderInterface; use Sylius\Component\Core\Repository\OrderRepositoryInterface; use Sylius\Resource\Model\ResourceInterface; use Sylius\TwigHooks\LiveComponent\HookableLiveComponentTrait; use Symfony\UX\LiveComponent\Attribute\AsLiveComponent; use Symfony\UX\LiveComponent\Attribute\LiveArg; use Symfony\UX\LiveComponent\Attribute\LiveListener; use Symfony\UX\LiveComponent\Attribute\LiveProp; use Symfony\UX\LiveComponent\DefaultActionTrait; #[AsLiveComponent] class SummaryComponent { use DefaultActionTrait; use HookableLiveComponentTrait; /** @use ResourceLivePropTrait<OrderInterface> */ use ResourceLivePropTrait; use TemplatePropTrait; #[LiveProp(hydrateWith: 'hydrateResource', dehydrateWith: 'dehydrateResource')] public ?ResourceInterface $cart = null; /** @param OrderRepositoryInterface<OrderInterface> $orderRepository */ public function __construct(OrderRepositoryInterface $orderRepository) { $this->initialize($orderRepository); } #[LiveListener(FormComponent::SYLIUS_SHOP_CART_CHANGED)] public function refreshCart(#[LiveArg] mixed $cartId): void { // Fix: ignore user-supplied cartId, reload from checksummed cart prop if ($this->cart === null) { return; } $this->cart = $this->hydrateResource($this->cart->getId()); } } ``` #### Step 5. Register overridden services In `config/services.yaml`, add: ```yaml sylius_shop.twig.component.checkout.address.form: class: App\Twig\Components\Checkout\Address\FormComponent arguments: $repository: '@sylius.repository.order' $formFactory: '@form.factory' $resourceClass: '%sylius.model.order.class%' $formClass: 'Sylius\Bundle\ShopBundle\Form\Type\Checkout\AddressType' $customerContext: '@sylius.context.customer' $shopUserRepository: '@sylius.repository.shop_user' $addressRepository: '@sylius.repository.address' tags: - { name: 'sylius.live_component.shop', key: 'sylius_shop:checkout:address:form' } sylius_shop.twig.component.cart.widget: class: App\Twig\Components\Cart\WidgetComponent arguments: $cartContext: '@sylius.context.cart.composite' $orderRepository: '@sylius.repository.order' tags: - { name: 'sylius.live_component.shop', key: 'sylius_shop:cart:widget' } sylius_shop.twig.component.cart.summary: class: App\Twig\Components\Cart\SummaryComponent arguments: $orderRepository: '@sylius.repository.order' tags: - { name: 'sylius.live_component.shop', key: 'sylius_shop:cart:summary' } ``` #### Step 6. Clear cache ```bash php bin/console cache:clear ``` ### Reporters We would like to extend our gratitude to the following individuals for their detailed reporting and responsible disclosure of this vulnerability: - Peter Stöckli (@p-) - Man Yue Mo (@m-y-mo) - The [GitHub Security Lab](https://securitylab.github.com) team ### For more information If you have any questions or comments about this advisory: - Open an issue in [Sylius issues](https://github.com/Sylius/Sylius/issues?q=sort%3Aupdated-desc+is%3Aissue+is%3Aopen) - Email us at [security@sylius.com](mailto:security@sylius.com)