- Description
- 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.
- Source
- security-advisories@github.com
- NVD status
- Analyzed
- Products
- adapter-node, kit
CVSS 4.0
- Type
- Secondary
- Base score
- 8.4
- Impact score
- -
- Exploitability score
- -
- Vector string
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:H/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Severity
- HIGH
CVSS 3.1
- Type
- Primary
- Base score
- 9.1
- Impact score
- 5.2
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- Severity
- CRITICAL
- Hype score
- Not currently trending
Happy to publish our first research of the year on the SvelteKit framework, downloaded over 800,000 times per week, which led to CVE-2025-67647 (w/@inzo____): Avoiding the paradox: A native full-read SSRF and one‑shot DoS in SvelteKit https://t.co/ZhWSK6Ugp3 Enjoy the read
@zhero___
16 Jan 2026
6685 Impressions
40 Retweets
207 Likes
81 Bookmarks
5 Replies
0 Quotes
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 fo… https://t.co/jEqek1bwAy
@CVEnew
15 Jan 2026
97 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
[
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:svelte:adapter-node:*:*:*:*:*:node.js:*:*",
"matchCriteriaId": "E3D434B8-77EC-432C-B1CA-AB441068FDD9",
"versionEndExcluding": "5.5.1",
"versionStartIncluding": "5.4.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:svelte:kit:*:*:*:*:*:node.js:*:*",
"matchCriteriaId": "C7B8741D-ECC4-4E4D-BB92-208C0E740D40",
"versionEndExcluding": "2.49.5",
"versionStartIncluding": "2.19.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
]