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GHSA-5q4q-834j-g8g4
No affected components available
Summary
The checkout component improperly filters URL-writable properties, allowing authenticated users to inject arbitrary key-value pairs into server provisioning parameters. Because bundled server extensions prioritize these user-supplied properties over administrator-defined configurations, a regular user can override hosting plans and resource limits at checkout without special privileges.
Technical Details
The Checkout Livewire component (app/Livewire/Products/Checkout.php) exposes the $checkoutConfig property to URL query parameters via the #[Url] attribute (aliased as config).
When processing this input:
- Validation rules are dynamically generated only for keys explicitly defined by an extension's
getCheckoutConfig()method. Any undefined keys injected into the query parameter bypass validation entirely. - The cart component (
app/Livewire/Cart.php) stores all keys fromcheckout_configdirectly into the database without sanitation:
foreach ($item->checkout_config as $key => $value) {
$service->properties()->updateOrCreate(['key' => $key], ['value' => $value]);
}
- During server provisioning, app/Helpers/ExtensionHelper.php retrieves these stored properties and passes them to the extension's createServer() method.
Because of how individual server extensions handle these properties, user-injected data overrides intended administrator settings.
Impact
This is a business logic flaw that allows remote, authenticated users to manipulate server provisioning parameters.
Depending on the active extension, this leads to unauthorized overrides of core resource limits (such as CPU, RAM, storage, or package tiers). No administrative privileges are required to exploit this vulnerability.
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The vulnerability can affect other systems as well, not just the initial system. There is a high impact on the integrity of the data. There is a low impact on the availability of the system.
Exploitation activity has been observed. Apply available patches or mitigations urgently.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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