AIKIDO-2026-53446
@sveltejs/kit is vulnerable to Denial of Service
53
Medium Risk
This Affects:
@sveltejs/kitTL;DR
SvelteKit processes remote form function payloads server-side, and a large or malformed payload can trigger a promise rejection that is never caught. The unhandled promise rejection propagates and terminates the Node.js process. An unauthenticated attacker can repeatedly send such payloads to crash the server and cause a denial of service. The fix adds catch handling so these rejections no longer take down the process.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you use remote form functions.
Background info
@sveltejs/kit is vulnerable to Denial of Service in versions 2.49.0 - 2.69.0.
How to fix this
Upgrade the @sveltejs/kit library to the patch version.
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