PT-2026-31990 · Sveltejs · Kit

Published 2026-04-10 · Updated 2026-04-10 · CVE-2026-40074

NVD

CVSS v4.0

6.3

Medium

AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

Fix

Improper Handling of Exceptional Conditions

Weakness Enumeration

CWE-755

Related Identifiers

CVE-2026-40074

Affected Products

Kit

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-40074 · Security Note
• https://github.com/sveltejs/kit/security/advisories/GHSA-3f6h-2hrp-w5wx · Note
• https://github.com/sveltejs/kit/commit/10d7b44425c3d9da642eecce373d0c6ef83b4fcd · Note
• https://github.com/sveltejs/kit/releases/tag/@sveltejs/kit@2.57.1 · Note