{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": [
              "cpe:2.3:a:nuxt:nuxt\\/rspack-builder:*:*:*:*:*:node.js:*:*",
              "cpe:2.3:a:nuxt:nuxt\\/webpack-builder:*:*:*:*:*:node.js:*:*"
            ],
            "extracted_events": [
              {
                "introduced": "3.12.2"
              },
              {
                "fixed": "3.21.5"
              },
              {
                "introduced": "4.0.0"
              },
              {
                "fixed": "4.4.5"
              },
              {
                "introduced": "3.0.0"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "8578e2bd62bdf3ce9dab70c7241a3953feb043b7"
            },
            {
              "fixed": "86f23c4cdac794cf360bac4d15356b56a84fd683"
            },
            {
              "introduced": "8aacdde48e8388c8bb11b9a5c2f59935341bfcfd"
            },
            {
              "fixed": "08f34b5d9f263446354459b6227a8ae0d5ff8e9f"
            },
            {
              "introduced": "d991a55ec36f5ac61de0af7d0b018a150153445b"
            },
            {
              "fixed": "86f23c4cdac794cf360bac4d15356b56a84fd683"
            }
          ],
          "repo": "https://github.com/nuxt/nuxt",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-749"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45670.json"
  },
  "details": "Nuxt is an open-source web development framework for Vue.js. In @nuxt/rspack-builder and @nuxt/webpack-builder versions 3.15.4 to before 3.21.6, and 4.0.0-alpha.1 to before 4.4.6, there is an incomplete fix for GHSA-4gf7-ff8x-hq99. Source code may be stolen during dev when using the webpack / rspack builder if the dev server is bound to a non-loopback address (e.g. nuxt dev --host) and the developer opens a malicious site on the same network. This issue has been patched in versions 3.21.6 and 4.4.6.",
  "id": "CVE-2026-45670",
  "modified": "2026-07-08T05:36:42.387859353Z",
  "published": "2026-06-12T12:51:16.156Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45670.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/nuxt/nuxt/security/advisories/GHSA-4gf7-ff8x-hq99"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/nuxt/nuxt/security/advisories/GHSA-6m52-m754-pw2g"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45670"
    },
    {
      "type": "FIX",
      "url": "https://github.com/nuxt/nuxt/pull/35051"
    }
  ],
  "related": [
    "GHSA-4gf7-ff8x-hq99",
    "GHSA-6m52-m754-pw2g"
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Nuxt: Dev server exposes built source over LAN to malicious sites (incomplete fix for GHSA-4gf7-ff8x-hq99)"
}