Vulnerability Description
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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Svelte | Kit | < 2.57.1 |
Related Weaknesses (CWE)
References
- https://github.com/sveltejs/kit/commit/10d7b44425c3d9da642eecce373d0c6ef83b4fcdPatch
- https://github.com/sveltejs/kit/releases/tag/@sveltejs/[email protected]ProductRelease Notes
- https://github.com/sveltejs/kit/security/advisories/GHSA-3f6h-2hrp-w5wxVendor Advisory
FAQ
What is CVE-2026-40074?
CVE-2026-40074 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 co...
How severe is CVE-2026-40074?
CVE-2026-40074 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-40074?
Check the references section above for vendor advisories and patch information. Affected products include: Svelte Kit.