Sending a GET or HEAD request with a body crashes SvelteKit

Description

In SvelteKit 2 sending a GET request with a body eg {} to a SvelteKit app in preview or with adapter-node throws Request with GET/HEAD method cannot have body. and crashes the app.

TRACE requests will also cause the app to crash. Prerendered pages and SvelteKit 1 apps are not affected.

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Recommendation

Update the @sveltejs/kit package to the latest compatible version. Followings are version details:

• Affected version(s): >= 2.0.0, < 2.4.3
• Patched version(s): 2.4.3

References

• GHSA-g5m6-hxpp-fc49
• CVE-2024-23641
• CWE-20
• CAPEC-310
• OWASP 2021-A3
• OWASP 2021-A6

Related Issues

• SvelteKit vulnerable to Cross-Site Request Forgery - CVE-2023-29003
• evershop allows unauthenticated attackers to force server to initiate HTTP request via "GET /images" API - CVE-2025-67427
• Nuxt Icon affected by a Server-Side Request Forgery (SSRF) - CVE-2024-42352
• SvelteKit: ReDoS (O(n^2)) in content negotiation — unauthenticated DoS via the Accept header - CVE-2026-66062

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Tags:

npm

@sveltejs/kit