{"id":"CVE-2025-67647","aliases":["GHSA-j62c-4x62-9r35"],"url":"https://o3.security/vulnerability/CVE-2025-67647","summary":"SvelteKit Denial of service and possible SSRF when using prerendering","details":"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.","published":"2026-01-15T18:33:25.295Z","modified":"2026-08-08T03:47:57.461361557Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"@sveltejs/kit","fixedVersion":"2.49.5"},{"ecosystem":"npm","name":"@sveltejs/adapter-node","fixedVersion":"5.5.1"}],"fix":{"url":"https://github.com/sveltejs/kit/commit/d9ae9b00b14f5574d109f3fd548f960594346226","label":"sveltejs/kit@d9ae9b0"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/67xxx/CVE-2025-67647.json"},{"type":"ADVISORY","url":"https://github.com/sveltejs/kit/security/advisories/GHSA-j62c-4x62-9r35"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-67647"},{"type":"FIX","url":"https://github.com/sveltejs/kit/commit/d9ae9b00b14f5574d109f3fd548f960594346226"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-08T03:47:57.461361557Z"}}