CVE-2025-67647SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte.
Updated under an hour ago ()
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It affects svelte adapter-node and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 9.1 CRITICAL (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- Weakness (CWE)
- CWE-248, CWE-918
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
svelte adapter-node svelte:adapter-node | from 5.4.1 before 5.5.1 | NVD |
svelte kit svelte:kit | from 2.19.0 before 2.49.5 | NVD |
References
- https://github.com/sveltejs/kit/commit/d9ae9b00b14f5574d109f3fd548f960594346226patch
- https://github.com/sveltejs/kit/security/advisories/GHSA-j62c-4x62-9r35vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.