CVE-2026-31820: Sylius/sylius Sylius Affected By IDOR Vulnerability
HIGH
Advisory Identifier:
GHSA-2xc6-348p-c2x6
CWE-639
Published
Advisory Summary
CVE-2026-31820 is a HIGH sylius affected by idor vulnerability (CWE-639: Authorization Bypass Through User-Controlled Key) affecting Sylius/sylius libraries in the Packagist ecosystem. The issue involves sylius affected by idor in cart and checkout livecomponents. Remediation is available by upgrading affected packages to version 2.0.16, 2.1.12, 2.2.3.
CVE-2026-31820 at a Glance
CVE Identifier
CVE-2026-31820
GHSA Identifier
GHSA-2xc6-348p-c2x6
Severity
HIGH
CVSS v3.1 Base Score
N/A
CWE Classification
CWE-639: Authorization Bypass Through User-Controlled Key
Affected Product
Sylius/sylius
Package Ecosystem
Packagist
Published Date
Last Updated
How to Fix CVE-2026-31820
To remediate this vulnerability, upgrade all affected Sylius/sylius dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
sylius/sylius
fixed: 2.0.16
Upgrade sylius/sylius to 2.0.16
sylius/sylius
fixed: 2.1.12
Upgrade sylius/sylius to 2.1.12
sylius/sylius
fixed: 2.2.3
Upgrade sylius/sylius to 2.2.3
Verify Direct and Transitive Dependencies
Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for sylius/syliusHow to Check if You Are Affected
To determine whether your application is affected by CVE-2026-31820, inspect your project dependencies for Sylius/sylius:
inspect dependencies for sylius/syliusAnalyze the terminal output to locate any version of Sylius/sylius in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.0.16), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-639: Authorization Bypass Through User-Controlled Key, where the system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. In Sylius/sylius, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
### 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)
CVE-2026-31820 Affected Sylius/sylius Versions
3 component(s)
Fixed Versions:
2.0.162.1.122.2.3
| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
sylius/sylius
|
Packagist |
≥ 2.0.0
< 2.0.16
|
2.0.16
|
|
sylius/sylius
|
Packagist |
≥ 2.1.0
< 2.1.12
|
2.1.12
|
|
sylius/sylius
|
Packagist |
≥ 2.2.0
< 2.2.3
|
2.2.3
|
References
Frequently Asked Questions
What is CVE-2026-31820?
CVE-2026-31820 is a security vulnerability in Sylius/sylius involving Sylius affected by IDOR in Cart and Checkout LiveComponents under CWE-639: Authorization Bypass Through User-Controlled Key.
Which Sylius/sylius versions are affected?
Affected versions include releases prior to 2.0.16, 2.1.12, 2.2.3 across affected packages: sylius/sylius.
What version fixes CVE-2026-31820?
Upgrading to 2.0.16, 2.1.12, 2.2.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is sylius/sylius affected?
Yes, sylius/sylius is affected in releases prior to 2.0.16, 2.1.12, 2.2.3. Upgrade your dependency to 2.0.16, 2.1.12, 2.2.3 or later.
What CWE is associated with CVE-2026-31820?
CVE-2026-31820 is classified under CWE-639: Authorization Bypass Through User-Controlled Key (The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.).
How can I check Packagist dependencies for CVE-2026-31820?
Run the dependency tree command: 'inspect dependencies for sylius/sylius'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON
OSV v1.5 Schema
Normalized schema output
{
"schema_version" : "1.4.0",
"id" : "GHSA-2xc6-348p-c2x6",
"modified" : "2026-03-11T05:46:26Z",
"published" : "2026-03-11T00:12:47Z",
"aliases" : [ "CVE-2026-31820" ],
"summary" : "Sylius affected by IDOR in Cart and Checkout LiveComponents",
"details" : "### Impact\nAn 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.\n\nCheckout 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.\n\nCart **WidgetComponent** (`refreshCart` action): Accepts a `cartId` via `#[LiveArg]` and loads any order directly from the repository, exposing order total and item count.\n\nCart **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.\n\nSince `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.\n\n### Patches\nThe issue is fixed in versions: 2.0.16, 2.1.12, 2.2.3 and above.\n\n### Workarounds\n\nOverride vulnerable LiveComponent classes at the project level to add authorization checks to `#[LiveArg]` parameters.\n\n#### Step 1. Exclude component overrides from default autowiring\n\nIn `config/services.yaml`, add `Twig/Component` to the exclude list to prevent duplicate service registration:\n\n```yaml\nApp\\:\n resource: '../src/*'\n exclude: '../src/{Entity,Kernel.php,Twig/Components}'\n```\n\n#### Step 2. Override checkout address FormComponent\n\nCreate `src/Twig/Components/Checkout/Address/FormComponent.php`:\n\n```php\n<?php\n\ndeclare(strict_types=1);\n\nnamespace App\\Twig\\Components\\Checkout\\Address;\n\nuse Sylius\\Bundle\\ShopBundle\\Twig\\Component\\Checkout\\Address\\AddressBookComponent;\nuse Sylius\\Bundle\\UiBundle\\Twig\\Component\\ResourceFormComponentTrait;\nuse Sylius\\Bundle\\UiBundle\\Twig\\Component\\TemplatePropTrait;\nuse Sylius\\Component\\Core\\Model\\OrderInterface;\nuse Sylius\\Component\\Core\\Model\\ShopUserInterface;\nuse Sylius\\Component\\Core\\Repository\\AddressRepositoryInterface;\nuse Sylius\\Component\\Core\\Repository\\OrderRepositoryInterface;\nuse Sylius\\Component\\Customer\\Context\\CustomerContextInterface;\nuse Sylius\\Component\\User\\Repository\\UserRepositoryInterface;\nuse Symfony\\Component\\Form\\FormFactoryInterface;\nuse Symfony\\Component\\Form\\FormInterface;\nuse Symfony\\UX\\LiveComponent\\Attribute\\AsLiveComponent;\nuse Symfony\\UX\\LiveComponent\\Attribute\\LiveArg;\nuse Symfony\\UX\\LiveComponent\\Attribute\\LiveListener;\nuse Symfony\\UX\\LiveComponent\\Attribute\\LiveProp;\nuse Symfony\\UX\\LiveComponent\\Attribute\\PreReRender;\n\n#[AsLiveComponent]\nclass FormComponent\n{\n /** @use ResourceFormComponentTrait<OrderInterface> */\n use ResourceFormComponentTrait;\n use TemplatePropTrait;\n\n #[LiveProp]\n public bool $emailExists = false;\n\n /**\n * @param OrderRepositoryInterface<OrderInterface> $repository\n * @param UserRepositoryInterface<ShopUserInterface> $shopUserRepository\n */\n public function __construct(\n OrderRepositoryInterface $repository,\n FormFactoryInterface $formFactory,\n string $resourceClass,\n string $formClass,\n protected readonly CustomerContextInterface $customerContext,\n protected readonly UserRepositoryInterface $shopUserRepository,\n protected readonly AddressRepositoryInterface $addressRepository,\n ) {\n $this->initialize($repository, $formFactory, $resourceClass, $formClass);\n }\n\n #[PreReRender(priority: -100)]\n public function checkEmailExist(): void\n {\n $email = $this->formValues['customer']['email'] ?? null;\n if (null !== $email) {\n $this->emailExists = $this->shopUserRepository->findOneByEmail($email) !== null;\n }\n }\n\n #[LiveListener(AddressBookComponent::SYLIUS_SHOP_ADDRESS_UPDATED)]\n public function addressFieldUpdated(#[LiveArg] mixed $addressId, #[LiveArg] string $field): void\n {\n $customer = $this->customerContext->getCustomer();\n if (null === $customer) {\n return;\n }\n\n // Fix: findOneByCustomer instead of find — validates ownership\n $address = $this->addressRepository->findOneByCustomer((string) $addressId, $customer);\n if (null === $address) {\n return;\n }\n\n $newAddress = [];\n $newAddress['firstName'] = $address->getFirstName();\n $newAddress['lastName'] = $address->getLastName();\n $newAddress['phoneNumber'] = $address->getPhoneNumber();\n $newAddress['company'] = $address->getCompany();\n $newAddress['countryCode'] = $address->getCountryCode();\n if ($address->getProvinceCode() !== null) {\n $newAddress['provinceCode'] = $address->getProvinceCode();\n }\n if ($address->getProvinceName() !== null) {\n $newAddress['provinceName'] = $address->getProvinceName();\n }\n $newAddress['street'] = $address->getStreet();\n $newAddress['city'] = $address->getCity();\n $newAddress['postcode'] = $address->getPostcode();\n\n $this->formValues[$field] = $newAddress;\n }\n\n protected function instantiateForm(): FormInterface\n {\n return $this->formFactory->create(\n $this->formClass,\n $this->resource,\n ['customer' => $this->customerContext->getCustomer()],\n );\n }\n}\n```\n\n#### Step 3. Override cart WidgetComponent\n\nCreate `src/Twig/Components/Cart/WidgetComponent.php`:\n\n```php\n<?php\n\ndeclare(strict_types=1);\n\nnamespace App\\Twig\\Components\\Cart;\n\nuse Sylius\\Bundle\\ShopBundle\\Twig\\Component\\Cart\\FormComponent;\nuse Sylius\\Bundle\\UiBundle\\Twig\\Component\\ResourceLivePropTrait;\nuse Sylius\\Bundle\\UiBundle\\Twig\\Component\\TemplatePropTrait;\nuse Sylius\\Component\\Core\\Model\\OrderInterface;\nuse Sylius\\Component\\Core\\Repository\\OrderRepositoryInterface;\nuse Sylius\\Component\\Order\\Context\\CartContextInterface;\nuse Sylius\\Component\\Order\\Context\\CartNotFoundException;\nuse Sylius\\Resource\\Model\\ResourceInterface;\nuse Sylius\\TwigHooks\\LiveComponent\\HookableLiveComponentTrait;\nuse Symfony\\UX\\LiveComponent\\Attribute\\AsLiveComponent;\nuse Symfony\\UX\\LiveComponent\\Attribute\\LiveArg;\nuse Symfony\\UX\\LiveComponent\\Attribute\\LiveListener;\nuse Symfony\\UX\\LiveComponent\\Attribute\\LiveProp;\nuse Symfony\\UX\\LiveComponent\\DefaultActionTrait;\nuse Symfony\\UX\\TwigComponent\\Attribute\\PreMount;\n\n#[AsLiveComponent]\nclass WidgetComponent\n{\n use DefaultActionTrait;\n use HookableLiveComponentTrait;\n use TemplatePropTrait;\n\n /** @use ResourceLivePropTrait<OrderInterface> */\n use ResourceLivePropTrait;\n\n #[LiveProp(hydrateWith: 'hydrateResource', dehydrateWith: 'dehydrateResource')]\n public ?ResourceInterface $cart = null;\n\n public function __construct(\n protected readonly CartContextInterface $cartContext,\n OrderRepositoryInterface $orderRepository,\n ) {\n $this->initialize($orderRepository);\n }\n\n #[PreMount]\n public function initializeCart(): void\n {\n $this->cart = $this->getCart();\n }\n\n #[LiveListener(FormComponent::SYLIUS_SHOP_CART_CHANGED)]\n #[LiveListener(FormComponent::SYLIUS_SHOP_CART_CLEARED)]\n public function refreshCart(#[LiveArg] mixed $cartId = null): void\n {\n // Fix: ignore user-supplied cartId, always load from session\n $this->cart = $this->getCart();\n }\n\n private function getCart(): ?OrderInterface\n {\n try {\n return $this->cartContext->getCart();\n } catch (CartNotFoundException) {\n return null;\n }\n\n return $cart;\n }\n}\n```\n\n#### Step 4. Override cart SummaryComponent\n\nCreate `src/Twig/Components/Cart/SummaryComponent.php`:\n\n```php\n<?php\n\ndeclare(strict_types=1);\n\nnamespace App\\Twig\\Components\\Cart;\n\nuse Sylius\\Bundle\\ShopBundle\\Twig\\Component\\Cart\\FormComponent;\nuse Sylius\\Bundle\\UiBundle\\Twig\\Component\\ResourceLivePropTrait;\nuse Sylius\\Bundle\\UiBundle\\Twig\\Component\\TemplatePropTrait;\nuse Sylius\\Component\\Core\\Model\\OrderInterface;\nuse Sylius\\Component\\Core\\Repository\\OrderRepositoryInterface;\nuse Sylius\\Resource\\Model\\ResourceInterface;\nuse Sylius\\TwigHooks\\LiveComponent\\HookableLiveComponentTrait;\nuse Symfony\\UX\\LiveComponent\\Attribute\\AsLiveComponent;\nuse Symfony\\UX\\LiveComponent\\Attribute\\LiveArg;\nuse Symfony\\UX\\LiveComponent\\Attribute\\LiveListener;\nuse Symfony\\UX\\LiveComponent\\Attribute\\LiveProp;\nuse Symfony\\UX\\LiveComponent\\DefaultActionTrait;\n\n#[AsLiveComponent]\nclass SummaryComponent\n{\n use DefaultActionTrait;\n use HookableLiveComponentTrait;\n\n /** @use ResourceLivePropTrait<OrderInterface> */\n use ResourceLivePropTrait;\n use TemplatePropTrait;\n\n #[LiveProp(hydrateWith: 'hydrateResource', dehydrateWith: 'dehydrateResource')]\n public ?ResourceInterface $cart = null;\n\n /** @param OrderRepositoryInterface<OrderInterface> $orderRepository */\n public function __construct(OrderRepositoryInterface $orderRepository)\n {\n $this->initialize($orderRepository);\n }\n\n #[LiveListener(FormComponent::SYLIUS_SHOP_CART_CHANGED)]\n public function refreshCart(#[LiveArg] mixed $cartId): void\n {\n // Fix: ignore user-supplied cartId, reload from checksummed cart prop\n if ($this->cart === null) {\n return;\n }\n\n $this->cart = $this->hydrateResource($this->cart->getId());\n }\n}\n```\n\n#### Step 5. Register overridden services\n\nIn `config/services.yaml`, add:\n\n```yaml\n sylius_shop.twig.component.checkout.address.form:\n class: App\\Twig\\Components\\Checkout\\Address\\FormComponent\n arguments:\n $repository: '@sylius.repository.order'\n $formFactory: '@form.factory'\n $resourceClass: '%sylius.model.order.class%'\n $formClass: 'Sylius\\Bundle\\ShopBundle\\Form\\Type\\Checkout\\AddressType'\n $customerContext: '@sylius.context.customer'\n $shopUserRepository: '@sylius.repository.shop_user'\n $addressRepository: '@sylius.repository.address'\n tags:\n - { name: 'sylius.live_component.shop', key: 'sylius_shop:checkout:address:form' }\n\n sylius_shop.twig.component.cart.widget:\n class: App\\Twig\\Components\\Cart\\WidgetComponent\n arguments:\n $cartContext: '@sylius.context.cart.composite'\n $orderRepository: '@sylius.repository.order'\n tags:\n - { name: 'sylius.live_component.shop', key: 'sylius_shop:cart:widget' }\n\n sylius_shop.twig.component.cart.summary:\n class: App\\Twig\\Components\\Cart\\SummaryComponent\n arguments:\n $orderRepository: '@sylius.repository.order'\n tags:\n - { name: 'sylius.live_component.shop', key: 'sylius_shop:cart:summary' }\n```\n\n#### Step 6. Clear cache\n\n```bash\nphp bin/console cache:clear\n```\n\n### Reporters\n\nWe would like to extend our gratitude to the following individuals for their detailed reporting and responsible disclosure of this vulnerability:\n- Peter Stöckli (@p-)\n- Man Yue Mo (@m-y-mo)\n- The [GitHub Security Lab](https://securitylab.github.com) team\n\n### For more information\nIf you have any questions or comments about this advisory:\n\n- Open an issue in [Sylius issues](https://github.com/Sylius/Sylius/issues?q=sort%3Aupdated-desc+is%3Aissue+is%3Aopen)\n- Email us at [security@sylius.com](mailto:security@sylius.com)",
"severity" : [ {
"type" : "CVSS_V4",
"score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Packagist",
"name" : "sylius/sylius"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2.0.0"
}, {
"fixed" : "2.0.16"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 2.0.15"
}
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "sylius/sylius"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2.1.0"
}, {
"fixed" : "2.1.12"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 2.1.11"
}
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "sylius/sylius"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2.2.0"
}, {
"fixed" : "2.2.3"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 2.2.2"
}
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/Sylius/Sylius/security/advisories/GHSA-2xc6-348p-c2x6"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-31820"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/Sylius/Sylius"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-639" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2026-03-11T00:12:47Z",
"nvd_published_at" : "2026-03-10T22:16:19Z"
}
}