SvelteKit Denial of service and possible SSRF when using prerendering_CVE-2025-67647

{
    "lastseen": "",
    "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.",
    "published": "2026-01-15T18:33:25.295Z",
    "modified": "2026-01-15T18:33:25.295Z",
    "type": "cve",
    "title": "SvelteKit Denial of service and possible SSRF when using prerendering",
    "source": "GitHub_M",
    "references": "https://github.com/sveltejs/kit/security/advisories/GHSA-j62c-4x62-9r35\nhttps://github.com/sveltejs/kit/commit/d9ae9b00b14f5574d109f3fd548f960594346226",
    "id": "CVE-2025-67647",
    "bulletinFamily": "",
    "cwe": [
        "CWE-248",
        "CWE-918"
    ],
    "cvelist": null,
    "sourceData": "sveltejs kit >= 2.19.0, < 2.49.5",
    "sourceHref": "",
    "cvss": {
        "score": 8.4,
        "severity": "HIGH",
        "vector": "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",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
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            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "kit",
    "version": ">= 2.19.0, < 2.49.5",
    "vendor": "sveltejs",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}