{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:*",
            "extracted_events": [
              {
                "introduced": "16.0.0"
              },
              {
                "fixed": "16.2.11"
              }
            ],
            "source": [
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "950609f96f694c5475d18cd2d72a0052ca04d4b9"
            },
            {
              "fixed": "9beca0821cf4606ae33466ed6f4fc75f2887a4da"
            },
            {
              "fixed": "6bf4df14508ad6c0cd46af50c6051ee42f2d9151"
            }
          ],
          "repo": "https://github.com/vercel/next.js",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-6gpp-xcg3-4w24"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-285"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64642.json"
  },
  "details": "Next.js is a React framework for building full-stack web applications. In versions 16.0.0 through 16.2.10, crafted requests targeting Next.js applications using App Router built with Turbopack and a single entry in config.i18n.locales can bypass middleware/proxy based authentication. This issue has been fixed in version 16.2.11.",
  "id": "CVE-2026-64642",
  "modified": "2026-08-12T03:51:26.685329996Z",
  "published": "2026-07-27T17:45:40.761Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/vercel/next.js/releases/tag/v16.2.11"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64642.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/vercel/next.js/security/advisories/GHSA-6gpp-xcg3-4w24"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64642"
    },
    {
      "type": "FIX",
      "url": "https://github.com/vercel/next.js/commit/6bf4df14508ad6c0cd46af50c6051ee42f2d9151"
    },
    {
      "type": "FIX",
      "url": "https://github.com/vercel/next.js/pull/96014"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Next.js: Middleware / Proxy bypass in App Router applications using Turbopack and single locale"
}