{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "16.0.0"
              },
              {
                "fixed": "16.2.11"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "950609f96f694c5475d18cd2d72a0052ca04d4b9"
            },
            {
              "fixed": "9beca0821cf4606ae33466ed6f4fc75f2887a4da"
            }
          ],
          "repo": "https://github.com/vercel/next.js",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-p9j2-gv94-2wf4"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-601",
      "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64645.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "\u003e= 12.0.0 \u003c 15.5.21"
          },
          {
            "last_affected": "\u003e= 12.0.0 \u003c 15.5.21"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Next.js is a React framework for building full-stack web applications. In versions 12.0.0 through 15.5.20 and 16.0.0 through 16.2.10, a\n rewrites() or redirects() rule that builds its external destination hostname from request-controlled input can be pointed at an arbitrary hostname, regardless of the rule's hostname suffix. For a rewrite, Next.js proxies the request to that arbitrary host and serves the response from the application's origin, leading to Server-Side Request forgery. A redirects() rule configured this way is vulnerable to an Open Redirect. This issue has been fixed in versions 15.5.21 and 16.2.11.",
  "id": "CVE-2026-64645",
  "modified": "2026-07-28T03:55:41.558252505Z",
  "published": "2026-07-27T17:37:07.695Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64645.json"
    },
    {
      "type": "FIX",
      "url": "https://github.com/vercel/next.js/commit/35f501357e9b0fe7c950b0d6aa8fcf5343f707e9"
    },
    {
      "type": "FIX",
      "url": "https://github.com/vercel/next.js/commit/d3033266c6dff23f7be71e19341fe3a8c6e2c599"
    },
    {
      "type": "WEB",
      "url": "https://github.com/vercel/next.js/releases/tag/v15.5.21"
    },
    {
      "type": "WEB",
      "url": "https://github.com/vercel/next.js/releases/tag/v16.2.11"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/vercel/next.js/security/advisories/GHSA-p9j2-gv94-2wf4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64645"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:L/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Next.js: Server-Side Request Forgery in rewrites via attacker-controlled destination hostname"
}