CVSS 4.0
8.4 highCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:H/SC:L/SI:L/SA:NCVE-2025-67647
High (8.4) in svelte. EPSS 0.5% chance of exploitation in the next 30 days. Fixed in @sveltejs/kit 2.49.5.
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.
Severity
CVSS 3.1
9.1 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H- EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 43% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-918, CWE-248
- Published
- Modified
- Record from
- the NVD, synced
Affected
- svelte:adapter-node
- svelte:kit
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-j62c-4x62-9r35 | npm | @sveltejs/kit | >=2.19.0 <2.49.5 | 2.49.5 |
| GHSA-j62c-4x62-9r35 | npm | @sveltejs/adapter-node | >=5.4.1 <5.5.1 | 5.5.1 |