React Router vulnerable to DoS via unbounded path expansion in __manifest endpoint_CVE-2026-42342

{
    "lastseen": "",
    "description": "React Router is a router for React. In versions 7.0.0 through 7.14.x of react-router and versions 2.10.0 through 2.17.4 of @remix-run/server-runtime, certain crafted requests can consume disproportionate server resources via unbounded path expansion in the __manifest endpoint, resulting in response time degradation and/or service unavailability for end users. This affects React Router Framework Mode applications as well as Remix applications. This does not impact applications using Declarative Mode (`<BrowserRouter>`) or Data Mode (`createBrowserRouter/<RouterProvider>`). This is patched in react-router version 7.15.0 and @remix-run/server-runtime version 2.17.5.",
    "published": "2026-06-02T18:23:02.765Z",
    "modified": "2026-06-02T18:23:02.765Z",
    "type": "cve",
    "title": "React Router vulnerable to DoS via unbounded path expansion in __manifest endpoint",
    "source": "GitHub_M",
    "references": "https://github.com/remix-run/react-router/security/advisories/GHSA-8x6r-g9mw-2r78",
    "id": "CVE-2026-42342",
    "bulletinFamily": "",
    "cwe": [
        "CWE-400"
    ],
    "cvelist": null,
    "sourceData": "remix-run react-router >= 7.0.0, < 7.15.0\nremix-run @remix-run/server-runtime >= 2.10.0, < 2.17.5",
    "sourceHref": "",
    "cvss": {
        "score": 7.5,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
        "version": "3.1"
    },
    "cvss2": [],
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        "baseScore": 0,
        "baseSeverity": "",
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        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "react-router",
    "version": ">= 7.0.0, < 7.15.0",
    "vendor": "remix-run",
    "ai_description": "",
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    "ai_score": 0
}