high7.5
CVE-2026-40073
SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte.
Impact
SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Prior to 2.57.1, under certain circumstances, requests could bypass the BODY_SIZE_LIMIT on SvelteKit applications running with adapter-node. This bypass does not affect body size limits at other layers of the application stack, so limits enforced in the WAF, gateway, or at the platform level are unaffected. This vulnerability is fixed in 2.57.1.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | @sveltejs/kit | <= 2.57.0 | 2.57.1 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Svelte | Kit | before 2.57.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/sveltejs/kit/commit/3202ed6c98f9e8d86bf0c4c7ad0f2e273e5e3b95
- https://github.com/sveltejs/kit/releases/tag/@sveltejs/kit@2.57.1
- https://github.com/sveltejs/kit/security/advisories/GHSA-2crg-3p73-43xp
- https://github.com/advisories/GHSA-2crg-3p73-43xp
- https://github.com/sveltejs/kit/releases/tag/%40sveltejs%2Fkit%402.57.1
- https://nvd.nist.gov/vuln/detail/CVE-2026-40073