CVE-2024-23641: kit Input Validation Flaw

Description

SvelteKit is a web development kit. In SvelteKit 2, sending a GET request with a body eg `{}` to a built and previewed/hosted sveltekit app throws `Request with GET/HEAD method cannot have body.` and crashes the preview/hosting. After this happens, one must manually restart the app. `TRACE` requests will also cause the app to crash. Prerendered pages and SvelteKit 1 apps are not affected. `@sveltejs/adapter-node` versions 2.1.2, 3.0.3, and 4.0.1 and `@sveltejs/kit` version 2.4.3 contain a patch for this issue.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-20 Improper Input Validation

Affected Products

Vendor	Product	Versions
svelte	adapter-node	2.0.0 — 2.1.2
svelte	adapter-node	3.0.0 — 3.0.3
svelte	adapter-node	All
svelte	kit	2.0.0 — 2.4.3

References

Advisories & Patches

https://github.com/sveltejs/kit/commit/af34142631c876a7eb62ff81f71e8a3f90dafee9 https://github.com/sveltejs/kit/security/advisories/GHSA-g5m6-hxpp-fc49 https://github.com/sveltejs/kit/commit/af34142631c876a7eb62ff81f71e8a3f90dafee9 https://github.com/sveltejs/kit/security/advisories/GHSA-g5m6-hxpp-fc49

Exploits

https://github.com/sveltejs/kit/security/advisories/GHSA-g5m6-hxpp-fc49 https://github.com/sveltejs/kit/security/advisories/GHSA-g5m6-hxpp-fc49

Frequently Asked Questions

What is CVE-2024-23641? +

SvelteKit is a web development kit. In SvelteKit 2, sending a GET request with a body eg `{}` to a built and previewed/hosted sveltekit app throws `Request with GET/HEAD method cannot have body.` and crashes the preview/hosting. After this happens, one must manually restart the app. `TRACE` requests will also cause the app to crash. Prerendered pages and SvelteKit 1 apps are not affected. `@sveltejs/adapter-node` versions 2.1.2, 3.0.3, and 4.0.1 and `@sveltejs/kit` version 2.4.3 contain a patch for this issue. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-23641? +

CVE-2024-23641 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-23641? +

CVE-2024-23641 affects products from svelte, specifically: adapter-node, kit. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-23641? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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