SvelteKit has a BODY_SIZE_LIMIT bypass in @sveltejs/adapter-node_CVE-2026-40073

8.2 / 10

HIGH

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Description

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.

Basic Information

ID CVE-2026-40073

Source GitHub_M

Published Apr 10, 2026 at 16:24

Affected Product

Vendor sveltejs

Product kit

Version < 2.57.1

Affected Versions sveltejs kit < 2.57.1

CWE Classification

CWE-770

References

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    "published": "2026-04-10T16:24:39.987Z",
    "modified": "2026-04-10T16:24:39.987Z",
    "type": "cve",
    "title": "SvelteKit has a BODY_SIZE_LIMIT bypass in @sveltejs/adapter-node",
    "source": "GitHub_M",
    "references": "https://github.com/sveltejs/kit/security/advisories/GHSA-2crg-3p73-43xp\nhttps://github.com/sveltejs/kit/commit/3202ed6c98f9e8d86bf0c4c7ad0f2e273e5e3b95\nhttps://github.com/sveltejs/kit/releases/tag/@sveltejs/[email protected]",
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