CVE-2026-40074
CVE-2026-40074 · SvelteKit's invalidated redirect in handle hook causes Denial-of-Service
This page contains facts from public vulnerability sources. Check the original advisory before updating.
SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Prior to 2.57.1, redirect, when called from inside the handle server hook with a location parameter containing characters that are invalid in a HTTP header, will cause an unhandled TypeError. This could result in DoS on some platforms, especially if the location passed to redirect contains unsanitized user input. This vulnerability is fixed in 2.57.1.
CVSS 6.3 · Medium · EPSS 0.4% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
kit
- Versions
- < 2.57.1: Affected
No fix published
@sveltejs/kit npm
- Affected ranges
- SEMVER: < 2.57.1
Update to 2.57.1