SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Prior to 2.49.5, SvelteKit is vulnerable to a server side request forgery (SSRF) and denial of service (DoS) under certain conditions. From 2.44.0 through 2.49.4, the vulnerability results in a DoS when your app has at least one prerendered route (export const prerender = true). From 2.19.0 through 2.49.4, the vulnerability results in a DoS when your app has at least one prerendered route and you are using adapter-node without a configured ORIGIN environment variable, and you are not using a reverse proxy that implements Host header validation. This vulnerability is fixed in 2.49.5.
Weakness
An exception is thrown from a function, but it is not caught.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Adapter-node | Svelte | 5.4.1 (including) | 5.5.1 (excluding) |
| Kit | Svelte | 2.19.0 (including) | 2.49.5 (excluding) |