CVE-2025-67647

SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Prior to 2.49.5, SvelteKit is vulnerable to a server side request forgery (SSRF) and denial of service (DoS) under certain conditions. From 2.44.0 through 2.49.4, the vulnerability results in a DoS when your app has at least one prerendered route (export const prerender = true). From 2.19.0 through 2.49.4, the vulnerability results in a DoS when your app has at least one prerendered route and you are using adapter-node without a configured ORIGIN environment variable, and you are not using a reverse proxy that implements Host header validation. This vulnerability is fixed in 2.49.5.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/sveltejs/kit/commit/d9ae9b00b14f5574d109f3fd548f960594346226	Patch
https://github.com/sveltejs/kit/security/advisories/GHSA-j62c-4x62-9r35	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:svelte:adapter-node::::::node.js::*
	cpe:2.3:a:svelte:kit::::::node.js::*

History

21 Jan 2026, 20:37

Type	Values Removed	Values Added
CPE		cpe:2.3:a:svelte:kit::::::node.js::* cpe:2.3:a:svelte:adapter-node::::::node.js::*
First Time		Svelte Svelte kit Svelte adapter-node
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 9.1
References	~~() https://github.com/sveltejs/kit/commit/d9ae9b00b14f5574d109f3fd548f960594346226 -~~	() https://github.com/sveltejs/kit/commit/d9ae9b00b14f5574d109f3fd548f960594346226 - Patch
References	~~() https://github.com/sveltejs/kit/security/advisories/GHSA-j62c-4x62-9r35 -~~	() https://github.com/sveltejs/kit/security/advisories/GHSA-j62c-4x62-9r35 - Vendor Advisory

15 Jan 2026, 19:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-15 19:16

Updated : 2026-01-21 20:37

NVD link : CVE-2025-67647

Mitre link : CVE-2025-67647

CVE.ORG link : CVE-2025-67647

JSON object : View

Products Affected

svelte

kit
adapter-node

CWE

CWE-248

Uncaught Exception

CWE-918

Server-Side Request Forgery (SSRF)

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