{
    "id": "CVE-2025-29927",
    "published": "2025-03-21 15:15:42",
    "last_modified": "2026-06-17 09:05:53",
    "cvss_score": "9.1",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
    "cwe": "CWE-285",
    "description": "Next.js is a React framework for building full-stack web applications. Starting in version 1.11.4 and prior to versions 12.3.5, 13.5.9, 14.2.25, and 15.2.3, it is possible to bypass authorization checks within a Next.js application, if the authorization check occurs in middleware. If patching to a safe version is infeasible, it is recommend that you prevent external user requests which contain the x-middleware-subrequest header from reaching your Next.js application. This vulnerability is fixed in 12.3.5, 13.5.9, 14.2.25, and 15.2.3.",
    "epss_score": "0.99225",
    "epss_percentile": "0.99935",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-26 18:37:30",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "vercel",
            "product": "next.js"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "52124",
            "title": "Next.js Middleware 15.2.2 -  Authorization Bypass",
            "date": "2025-04-05",
            "url": "https://www.exploit-db.com/exploits/52124"
        }
    ],
    "refs_list": [
        "https://github.com/vercel/next.js/commit/52a078da3884efe6501613c7834a3d02a91676d2",
        "https://github.com/vercel/next.js/commit/5fd3ae8f8542677c6294f32d18022731eab6fe48",
        "https://github.com/vercel/next.js/releases/tag/v12.3.5",
        "https://github.com/vercel/next.js/releases/tag/v13.5.9",
        "https://github.com/vercel/next.js/security/advisories/GHSA-f82v-jwr5-mffw",
        "http://www.openwall.com/lists/oss-security/2025/03/23/3",
        "http://www.openwall.com/lists/oss-security/2025/03/23/4",
        "https://security.netapp.com/advisory/ntap-20250328-0002/"
    ]
}